diff --git a/NEWS.md b/NEWS.md
index 1e3c1729e1659..195761df55b9e 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -315,6 +315,9 @@ Deprecated or removed
   * `Base.cpad` has been removed; use an appropriate combination of `rpad` and `lpad`
     instead ([#23187]).
 
+  * `ctranspose` and `ctranspose!` have been deprecated in favor of `adjoint` and `adjoint!`,
+    respectively ([#23235]).
+
   * `filter` and `filter!` on dictionaries now pass a single `key=>value` pair to the
     argument function, instead of two arguments ([#17886]).
 
diff --git a/base/deprecated.jl b/base/deprecated.jl
index 97ec06ecb4484..2b412d081d594 100644
--- a/base/deprecated.jl
+++ b/base/deprecated.jl
@@ -1421,7 +1421,7 @@ end
 module Operators
     for op in [:!, :(!=), :(!==), :%, :&, :*, :+, :-, :/, ://, :<, :<:, :<<, :(<=),
                :<|, :(==), :(===), :>, :>:, :(>=), :>>, :>>>, :\, :^, :colon,
-               :ctranspose, :getindex, :hcat, :hvcat, :setindex!, :transpose, :vcat,
+               :adjoint, :getindex, :hcat, :hvcat, :setindex!, :transpose, :vcat,
                :xor, :|, :|>, :~, :×, :÷, :∈, :∉, :∋, :∌, :∘, :√, :∛, :∩, :∪, :≠, :≤,
                :≥, :⊆, :⊈, :⊊, :⊻, :⋅]
         if isdefined(Base, op)
@@ -1684,6 +1684,10 @@ export hex2num
 # PR #22742: change in isapprox semantics
 @deprecate rtoldefault(x,y) rtoldefault(x,y,0) false
 
+# PR #23235
+@deprecate ctranspose adjoint
+@deprecate ctranspose! adjoint!
+
 # issue #5148, PR #23259
 # warning for `const` on locals should be changed to an error in julia-syntax.scm
 
diff --git a/base/exports.jl b/base/exports.jl
index 8a086f914ca3a..49d3ceb5d3568 100644
--- a/base/exports.jl
+++ b/base/exports.jl
@@ -555,8 +555,8 @@ export
     cond,
     condskeel,
     cross,
-    ctranspose!,
-    ctranspose,
+    adjoint!,
+    adjoint,
     det,
     diag,
     diagind,
diff --git a/base/linalg/bidiag.jl b/base/linalg/bidiag.jl
index 4c18334f4f172..2bd180ea497ad 100644
--- a/base/linalg/bidiag.jl
+++ b/base/linalg/bidiag.jl
@@ -221,7 +221,7 @@ broadcast(::typeof(floor), ::Type{T}, M::Bidiagonal) where {T<:Integer} = Bidiag
 broadcast(::typeof(ceil), ::Type{T}, M::Bidiagonal) where {T<:Integer} = Bidiagonal(ceil.(T, M.dv), ceil.(T, M.ev), M.uplo)
 
 transpose(M::Bidiagonal) = Bidiagonal(M.dv, M.ev, M.uplo == 'U' ? :L : :U)
-ctranspose(M::Bidiagonal) = Bidiagonal(conj(M.dv), conj(M.ev), M.uplo == 'U' ? :L : :U)
+adjoint(M::Bidiagonal) = Bidiagonal(conj(M.dv), conj(M.ev), M.uplo == 'U' ? :L : :U)
 
 istriu(M::Bidiagonal) = M.uplo == 'U' || iszero(M.ev)
 istril(M::Bidiagonal) = M.uplo == 'L' || iszero(M.ev)
@@ -456,7 +456,7 @@ end
 #Linear solvers
 A_ldiv_B!(A::Union{Bidiagonal, AbstractTriangular}, b::AbstractVector) = naivesub!(A, b)
 At_ldiv_B!(A::Bidiagonal, b::AbstractVector) = A_ldiv_B!(transpose(A), b)
-Ac_ldiv_B!(A::Bidiagonal, b::AbstractVector) = A_ldiv_B!(ctranspose(A), b)
+Ac_ldiv_B!(A::Bidiagonal, b::AbstractVector) = A_ldiv_B!(adjoint(A), b)
 function A_ldiv_B!(A::Union{Bidiagonal,AbstractTriangular}, B::AbstractMatrix)
     nA,mA = size(A)
     tmp = similar(B,size(B,1))
diff --git a/base/linalg/bitarray.jl b/base/linalg/bitarray.jl
index b591b94d0e358..4df257bfa75a6 100644
--- a/base/linalg/bitarray.jl
+++ b/base/linalg/bitarray.jl
@@ -295,4 +295,4 @@ function transpose(B::BitMatrix)
     return Bt
 end
 
-ctranspose(B::Union{BitMatrix,BitVector}) = transpose(B)
+adjoint(B::Union{BitMatrix,BitVector}) = transpose(B)
diff --git a/base/linalg/cholesky.jl b/base/linalg/cholesky.jl
index fe3bb861f5a58..8ada08741687d 100644
--- a/base/linalg/cholesky.jl
+++ b/base/linalg/cholesky.jl
@@ -150,7 +150,7 @@ function chol(A::RealHermSymComplexHerm)
     if A.uplo == 'U'
         copy!(AA, A.data)
     else
-        Base.ctranspose!(AA, A.data)
+        Base.adjoint!(AA, A.data)
     end
     chol!(Hermitian(AA, :U))
 end
diff --git a/base/linalg/conjarray.jl b/base/linalg/conjarray.jl
index 0cd982761157b..c43bc0436b0b1 100644
--- a/base/linalg/conjarray.jl
+++ b/base/linalg/conjarray.jl
@@ -5,7 +5,7 @@
 
 A lazy-view wrapper of an `AbstractArray`, taking the elementwise complex conjugate. This
 type is usually constructed (and unwrapped) via the [`conj`](@ref) function (or related
-[`ctranspose`](@ref)), but currently this is the default behavior for `RowVector` only. For
+[`adjoint`](@ref)), but currently this is the default behavior for `RowVector` only. For
 other arrays, the `ConjArray` constructor can be used directly.
 
 # Examples
diff --git a/base/linalg/diagonal.jl b/base/linalg/diagonal.jl
index 439e409958c52..3b0cd7d58a2f1 100644
--- a/base/linalg/diagonal.jl
+++ b/base/linalg/diagonal.jl
@@ -186,11 +186,11 @@ function A_mul_B!(D::Diagonal, B::UnitUpperTriangular)
     UpperTriangular(B.data)
 end
 
-Ac_mul_B(D::Diagonal, B::Diagonal) = Diagonal(ctranspose.(D.diag) .* B.diag)
-Ac_mul_B(A::AbstractTriangular, D::Diagonal) = A_mul_B!(ctranspose(A), D)
+Ac_mul_B(D::Diagonal, B::Diagonal) = Diagonal(adjoint.(D.diag) .* B.diag)
+Ac_mul_B(A::AbstractTriangular, D::Diagonal) = A_mul_B!(adjoint(A), D)
 function Ac_mul_B(A::AbstractMatrix, D::Diagonal)
     Ac = similar(A, promote_op(*, eltype(A), eltype(D.diag)), (size(A, 2), size(A, 1)))
-    ctranspose!(Ac, A)
+    adjoint!(Ac, A)
     A_mul_B!(Ac, D)
 end
 
@@ -202,12 +202,12 @@ function At_mul_B(A::AbstractMatrix, D::Diagonal)
     A_mul_B!(At, D)
 end
 
-A_mul_Bc(D::Diagonal, B::Diagonal) = Diagonal(D.diag .* ctranspose.(B.diag))
-A_mul_Bc(D::Diagonal, B::AbstractTriangular) = A_mul_B!(D, ctranspose(B))
+A_mul_Bc(D::Diagonal, B::Diagonal) = Diagonal(D.diag .* adjoint.(B.diag))
+A_mul_Bc(D::Diagonal, B::AbstractTriangular) = A_mul_B!(D, adjoint(B))
 A_mul_Bc(D::Diagonal, Q::Union{Base.LinAlg.QRCompactWYQ,Base.LinAlg.QRPackedQ}) = A_mul_Bc!(Array(D), Q)
 function A_mul_Bc(D::Diagonal, A::AbstractMatrix)
     Ac = similar(A, promote_op(*, eltype(A), eltype(D.diag)), (size(A, 2), size(A, 1)))
-    ctranspose!(Ac, A)
+    adjoint!(Ac, A)
     A_mul_B!(D, Ac)
 end
 
@@ -219,7 +219,7 @@ function A_mul_Bt(D::Diagonal, A::AbstractMatrix)
     A_mul_B!(D, At)
 end
 
-Ac_mul_Bc(D::Diagonal, B::Diagonal) = Diagonal(ctranspose.(D.diag) .* ctranspose.(B.diag))
+Ac_mul_Bc(D::Diagonal, B::Diagonal) = Diagonal(adjoint.(D.diag) .* adjoint.(B.diag))
 At_mul_Bt(D::Diagonal, B::Diagonal) = Diagonal(transpose.(D.diag) .* transpose.(B.diag))
 
 A_mul_B!(A::Diagonal,B::Diagonal)  = throw(MethodError(A_mul_B!, Tuple{Diagonal,Diagonal}))
@@ -235,11 +235,11 @@ A_mul_Bc!(A::AbstractMatrix,B::Diagonal) = scale!(A,conj(B.diag))
 
 # Get ambiguous method if try to unify AbstractVector/AbstractMatrix here using AbstractVecOrMat
 A_mul_B!(out::AbstractVector, A::Diagonal, in::AbstractVector) = out .= A.diag .* in
-Ac_mul_B!(out::AbstractVector, A::Diagonal, in::AbstractVector) = out .= ctranspose.(A.diag) .* in
+Ac_mul_B!(out::AbstractVector, A::Diagonal, in::AbstractVector) = out .= adjoint.(A.diag) .* in
 At_mul_B!(out::AbstractVector, A::Diagonal, in::AbstractVector) = out .= transpose.(A.diag) .* in
 
 A_mul_B!(out::AbstractMatrix, A::Diagonal, in::AbstractMatrix) = out .= A.diag .* in
-Ac_mul_B!(out::AbstractMatrix, A::Diagonal, in::AbstractMatrix) = out .= ctranspose.(A.diag) .* in
+Ac_mul_B!(out::AbstractMatrix, A::Diagonal, in::AbstractMatrix) = out .= adjoint.(A.diag) .* in
 At_mul_B!(out::AbstractMatrix, A::Diagonal, in::AbstractMatrix) = out .= transpose.(A.diag) .* in
 
 # ambiguities with Symmetric/Hermitian
@@ -306,13 +306,13 @@ A_rdiv_Bt!(A::AbstractMatrix{T}, D::Diagonal{T}) where {T} = A_rdiv_B!(A, D)
 # Methods to resolve ambiguities with `Diagonal`
 @inline *(rowvec::RowVector, D::Diagonal) = transpose(D * transpose(rowvec))
 @inline A_mul_Bt(D::Diagonal, rowvec::RowVector) = D*transpose(rowvec)
-@inline A_mul_Bc(D::Diagonal, rowvec::RowVector) = D*ctranspose(rowvec)
+@inline A_mul_Bc(D::Diagonal, rowvec::RowVector) = D*adjoint(rowvec)
 
 conj(D::Diagonal) = Diagonal(conj(D.diag))
 transpose(D::Diagonal{<:Number}) = D
 transpose(D::Diagonal) = Diagonal(transpose.(D.diag))
-ctranspose(D::Diagonal{<:Number}) = conj(D)
-ctranspose(D::Diagonal) = Diagonal(ctranspose.(D.diag))
+adjoint(D::Diagonal{<:Number}) = conj(D)
+adjoint(D::Diagonal) = Diagonal(adjoint.(D.diag))
 
 diag(D::Diagonal) = D.diag
 trace(D::Diagonal) = sum(D.diag)
diff --git a/base/linalg/factorization.jl b/base/linalg/factorization.jl
index e3b10d258857c..581f711657398 100644
--- a/base/linalg/factorization.jl
+++ b/base/linalg/factorization.jl
@@ -6,7 +6,7 @@ abstract type Factorization{T} end
 
 eltype(::Type{Factorization{T}}) where {T} = T
 transpose(F::Factorization) = error("transpose not implemented for $(typeof(F))")
-ctranspose(F::Factorization) = error("ctranspose not implemented for $(typeof(F))")
+adjoint(F::Factorization) = error("adjoint not implemented for $(typeof(F))")
 
 macro assertposdef(A, info)
    :($(esc(info)) == 0 ? $(esc(A)) : throw(PosDefException($(esc(info)))))
diff --git a/base/linalg/generic.jl b/base/linalg/generic.jl
index 8c69ebe1548b6..b08354ca30ecd 100644
--- a/base/linalg/generic.jl
+++ b/base/linalg/generic.jl
@@ -942,7 +942,7 @@ function ishermitian(A::AbstractMatrix)
         return false
     end
     for i = indsn, j = i:last(indsn)
-        if A[i,j] != ctranspose(A[j,i])
+        if A[i,j] != adjoint(A[j,i])
             return false
         end
     end
diff --git a/base/linalg/givens.jl b/base/linalg/givens.jl
index d822499d94c43..de621983494d4 100644
--- a/base/linalg/givens.jl
+++ b/base/linalg/givens.jl
@@ -41,8 +41,8 @@ convert(::Type{Rotation{T}}, R::Rotation) where {T} = Rotation{T}([convert(Given
 convert(::Type{AbstractRotation{T}}, G::Givens) where {T} = convert(Givens{T}, G)
 convert(::Type{AbstractRotation{T}}, R::Rotation) where {T} = convert(Rotation{T}, R)
 
-ctranspose(G::Givens) = Givens(G.i1, G.i2, conj(G.c), -G.s)
-ctranspose(R::Rotation{T}) where {T} = Rotation{T}(reverse!([ctranspose(r) for r in R.rotations]))
+adjoint(G::Givens) = Givens(G.i1, G.i2, conj(G.c), -G.s)
+adjoint(R::Rotation{T}) where {T} = Rotation{T}(reverse!([adjoint(r) for r in R.rotations]))
 
 realmin2(::Type{Float32}) = reinterpret(Float32, 0x26000000)
 realmin2(::Type{Float64}) = reinterpret(Float64, 0x21a0000000000000)
diff --git a/base/linalg/linalg.jl b/base/linalg/linalg.jl
index a510f0efc8b51..52228e1910d60 100644
--- a/base/linalg/linalg.jl
+++ b/base/linalg/linalg.jl
@@ -6,7 +6,7 @@ import Base: \, /, *, ^, +, -, ==
 import Base: A_mul_Bt, At_ldiv_Bt, A_rdiv_Bc, At_ldiv_B, Ac_mul_Bc, A_mul_Bc, Ac_mul_B,
     Ac_ldiv_B, Ac_ldiv_Bc, At_mul_Bt, A_rdiv_Bt, At_mul_B
 import Base: USE_BLAS64, abs, big, broadcast, ceil, conj, convert, copy, copy!,
-    ctranspose, eltype, eye, findmax, findmin, fill!, floor, full, getindex,
+    adjoint, eltype, eye, findmax, findmin, fill!, floor, full, getindex,
     hcat, imag, indices, inv, isapprox, isone, IndexStyle, kron, length, map,
     ndims, oneunit, parent, power_by_squaring, print_matrix, promote_rule, real, round,
     setindex!, show, similar, size, transpose, trunc, typed_hcat
@@ -63,8 +63,8 @@ export
     copy!,
     copy_transpose!,
     cross,
-    ctranspose,
-    ctranspose!,
+    adjoint,
+    adjoint!,
     det,
     diag,
     diagind,
diff --git a/base/linalg/lq.jl b/base/linalg/lq.jl
index b6b43289385fb..3c535433e6cf5 100644
--- a/base/linalg/lq.jl
+++ b/base/linalg/lq.jl
@@ -56,7 +56,7 @@ convert(::Type{Matrix}, A::LQ) = convert(Array, convert(AbstractArray, A))
 convert(::Type{Array}, A::LQ) = convert(Matrix, A)
 full(A::LQ) = convert(AbstractArray, A)
 
-ctranspose(A::LQ{T}) where {T} = QR{T,typeof(A.factors)}(A.factors', A.τ)
+adjoint(A::LQ{T}) where {T} = QR{T,typeof(A.factors)}(A.factors', A.τ)
 
 function getindex(A::LQ, d::Symbol)
     m, n = size(A)
@@ -164,7 +164,7 @@ for (f1, f2) in ((:A_mul_Bc, :A_mul_B!),
         function ($f1)(A::LQPackedQ, B::StridedVecOrMat)
             TAB = promote_type(eltype(A), eltype(B))
             BB = similar(B, TAB, (size(B, 2), size(B, 1)))
-            ctranspose!(BB, B)
+            adjoint!(BB, B)
             return ($f2)(A, BB)
         end
     end
@@ -198,7 +198,7 @@ for (f1, f2) in ((:Ac_mul_B, :A_mul_B!),
         function ($f1)(A::StridedMatrix, B::LQPackedQ)
             TAB = promote_type(eltype(A), eltype(B))
             AA = similar(A, TAB, (size(A, 2), size(A, 1)))
-            ctranspose!(AA, A)
+            adjoint!(AA, A)
             return ($f2)(AA, B)
         end
     end
diff --git a/base/linalg/lu.jl b/base/linalg/lu.jl
index d25f61a2a406f..0397608407d9d 100644
--- a/base/linalg/lu.jl
+++ b/base/linalg/lu.jl
@@ -275,8 +275,8 @@ At_ldiv_Bt(A::LU{T,<:StridedMatrix}, B::StridedVecOrMat{T}) where {T<:BlasFloat}
 At_ldiv_Bt(A::LU, B::StridedVecOrMat) = At_ldiv_B(A, transpose(B))
 
 Ac_ldiv_Bc(A::LU{T,<:StridedMatrix}, B::StridedVecOrMat{T}) where {T<:BlasComplex} =
-    @assertnonsingular LAPACK.getrs!('C', A.factors, A.ipiv, ctranspose(B)) A.info
-Ac_ldiv_Bc(A::LU, B::StridedVecOrMat) = Ac_ldiv_B(A, ctranspose(B))
+    @assertnonsingular LAPACK.getrs!('C', A.factors, A.ipiv, adjoint(B)) A.info
+Ac_ldiv_Bc(A::LU, B::StridedVecOrMat) = Ac_ldiv_B(A, adjoint(B))
 
 function det(F::LU{T}) where T
     n = checksquare(F)
diff --git a/base/linalg/matmul.jl b/base/linalg/matmul.jl
index 6112d29be3b54..7badc4be6176b 100644
--- a/base/linalg/matmul.jl
+++ b/base/linalg/matmul.jl
@@ -663,14 +663,14 @@ function matmul2x2!(C::AbstractMatrix, tA, tB, A::AbstractMatrix, B::AbstractMat
     if tA == 'T'
         A11 = transpose(A[1,1]); A12 = transpose(A[2,1]); A21 = transpose(A[1,2]); A22 = transpose(A[2,2])
     elseif tA == 'C'
-        A11 = ctranspose(A[1,1]); A12 = ctranspose(A[2,1]); A21 = ctranspose(A[1,2]); A22 = ctranspose(A[2,2])
+        A11 = adjoint(A[1,1]); A12 = adjoint(A[2,1]); A21 = adjoint(A[1,2]); A22 = adjoint(A[2,2])
     else
         A11 = A[1,1]; A12 = A[1,2]; A21 = A[2,1]; A22 = A[2,2]
     end
     if tB == 'T'
         B11 = transpose(B[1,1]); B12 = transpose(B[2,1]); B21 = transpose(B[1,2]); B22 = transpose(B[2,2])
     elseif tB == 'C'
-        B11 = ctranspose(B[1,1]); B12 = ctranspose(B[2,1]); B21 = ctranspose(B[1,2]); B22 = ctranspose(B[2,2])
+        B11 = adjoint(B[1,1]); B12 = adjoint(B[2,1]); B21 = adjoint(B[1,2]); B22 = adjoint(B[2,2])
     else
         B11 = B[1,1]; B12 = B[1,2]; B21 = B[2,1]; B22 = B[2,2]
     end
@@ -697,9 +697,9 @@ function matmul3x3!(C::AbstractMatrix, tA, tB, A::AbstractMatrix, B::AbstractMat
         A21 = transpose(A[1,2]); A22 = transpose(A[2,2]); A23 = transpose(A[3,2])
         A31 = transpose(A[1,3]); A32 = transpose(A[2,3]); A33 = transpose(A[3,3])
     elseif tA == 'C'
-        A11 = ctranspose(A[1,1]); A12 = ctranspose(A[2,1]); A13 = ctranspose(A[3,1])
-        A21 = ctranspose(A[1,2]); A22 = ctranspose(A[2,2]); A23 = ctranspose(A[3,2])
-        A31 = ctranspose(A[1,3]); A32 = ctranspose(A[2,3]); A33 = ctranspose(A[3,3])
+        A11 = adjoint(A[1,1]); A12 = adjoint(A[2,1]); A13 = adjoint(A[3,1])
+        A21 = adjoint(A[1,2]); A22 = adjoint(A[2,2]); A23 = adjoint(A[3,2])
+        A31 = adjoint(A[1,3]); A32 = adjoint(A[2,3]); A33 = adjoint(A[3,3])
     else
         A11 = A[1,1]; A12 = A[1,2]; A13 = A[1,3]
         A21 = A[2,1]; A22 = A[2,2]; A23 = A[2,3]
@@ -711,9 +711,9 @@ function matmul3x3!(C::AbstractMatrix, tA, tB, A::AbstractMatrix, B::AbstractMat
         B21 = transpose(B[1,2]); B22 = transpose(B[2,2]); B23 = transpose(B[3,2])
         B31 = transpose(B[1,3]); B32 = transpose(B[2,3]); B33 = transpose(B[3,3])
     elseif tB == 'C'
-        B11 = ctranspose(B[1,1]); B12 = ctranspose(B[2,1]); B13 = ctranspose(B[3,1])
-        B21 = ctranspose(B[1,2]); B22 = ctranspose(B[2,2]); B23 = ctranspose(B[3,2])
-        B31 = ctranspose(B[1,3]); B32 = ctranspose(B[2,3]); B33 = ctranspose(B[3,3])
+        B11 = adjoint(B[1,1]); B12 = adjoint(B[2,1]); B13 = adjoint(B[3,1])
+        B21 = adjoint(B[1,2]); B22 = adjoint(B[2,2]); B23 = adjoint(B[3,2])
+        B31 = adjoint(B[1,3]); B32 = adjoint(B[2,3]); B33 = adjoint(B[3,3])
     else
         B11 = B[1,1]; B12 = B[1,2]; B13 = B[1,3]
         B21 = B[2,1]; B22 = B[2,2]; B23 = B[2,3]
diff --git a/base/linalg/qr.jl b/base/linalg/qr.jl
index a6e1e7522c429..46b46d3cb3cf3 100644
--- a/base/linalg/qr.jl
+++ b/base/linalg/qr.jl
@@ -595,7 +595,7 @@ for (f1, f2) in ((:A_mul_Bc, :A_mul_B!),
         function ($f1)(Q::AbstractQ, B::StridedVecOrMat)
             TQB = promote_type(eltype(Q), eltype(B))
             Bc = similar(B, TQB, (size(B, 2), size(B, 1)))
-            ctranspose!(Bc, B)
+            adjoint!(Bc, B)
             return ($f2)(convert(AbstractMatrix{TQB}, Q), Bc)
         end
     end
@@ -678,7 +678,7 @@ function A_mul_Bc(A::StridedMatrix, B::AbstractQ)
         throw(DimensionMismatch("matrix A has dimensions $(size(A)) but matrix B has dimensions $(size(B))"))
     end
 end
-@inline A_mul_Bc(rowvec::RowVector, B::AbstractQ) = ctranspose(B*ctranspose(rowvec))
+@inline A_mul_Bc(rowvec::RowVector, B::AbstractQ) = adjoint(B*adjoint(rowvec))
 
 
 ### AcQ/AcQc
@@ -688,7 +688,7 @@ for (f1, f2) in ((:Ac_mul_B, :A_mul_B!),
         function ($f1)(A::StridedVecOrMat, Q::AbstractQ)
             TAQ = promote_type(eltype(A), eltype(Q))
             Ac = similar(A, TAQ, (size(A, 2), size(A, 1)))
-            ctranspose!(Ac, A)
+            adjoint!(Ac, A)
             return ($f2)(Ac, convert(AbstractMatrix{TAQ}, Q))
         end
     end
diff --git a/base/linalg/rowvector.jl b/base/linalg/rowvector.jl
index eb24fa5792517..b7b3270a507ef 100644
--- a/base/linalg/rowvector.jl
+++ b/base/linalg/rowvector.jl
@@ -6,7 +6,7 @@
 A lazy-view wrapper of an [`AbstractVector`](@ref), which turns a length-`n` vector into a `1×n`
 shaped row vector and represents the transpose of a vector (the elements are also transposed
 recursively). This type is usually constructed (and unwrapped) via the [`transpose`](@ref)
-function or `.'` operator (or related [`ctranspose`](@ref) or `'` operator).
+function or `.'` operator (or related [`adjoint`](@ref) or `'` operator).
 
 By convention, a vector can be multiplied by a matrix on its left (`A * v`) whereas a row
 vector can be multiplied by a matrix on its right (such that `v.' * A = (A.' * v).'`). It
@@ -75,12 +75,12 @@ julia> transpose(v)
 ```
 """
 @inline transpose(vec::AbstractVector) = RowVector(vec)
-@inline ctranspose(vec::AbstractVector) = RowVector(_conj(vec))
+@inline adjoint(vec::AbstractVector) = RowVector(_conj(vec))
 
 @inline transpose(rowvec::RowVector) = rowvec.vec
 @inline transpose(rowvec::ConjRowVector) = copy(rowvec.vec) # remove the ConjArray wrapper from any raw vector
-@inline ctranspose(rowvec::RowVector) = conj(rowvec.vec)
-@inline ctranspose(rowvec::RowVector{<:Real}) = rowvec.vec
+@inline adjoint(rowvec::RowVector) = conj(rowvec.vec)
+@inline adjoint(rowvec::RowVector{<:Real}) = rowvec.vec
 
 parent(rowvec::RowVector) = rowvec.vec
 
@@ -208,24 +208,24 @@ At_mul_B(vec::AbstractVector, rowvec::RowVector) = throw(DimensionMismatch(
 
 # Conjugated forms
 A_mul_Bc(::RowVector, ::AbstractVector) = throw(DimensionMismatch("Cannot multiply two transposed vectors"))
-@inline A_mul_Bc(rowvec::RowVector, mat::AbstractMatrix) = ctranspose(mat * ctranspose(rowvec))
-@inline A_mul_Bc(rowvec1::RowVector, rowvec2::RowVector) = rowvec1 * ctranspose(rowvec2)
+@inline A_mul_Bc(rowvec::RowVector, mat::AbstractMatrix) = adjoint(mat * adjoint(rowvec))
+@inline A_mul_Bc(rowvec1::RowVector, rowvec2::RowVector) = rowvec1 * adjoint(rowvec2)
 A_mul_Bc(vec::AbstractVector, rowvec::RowVector) = throw(DimensionMismatch("Cannot multiply two vectors"))
-@inline A_mul_Bc(vec1::AbstractVector, vec2::AbstractVector) = vec1 * ctranspose(vec2)
-@inline A_mul_Bc(mat::AbstractMatrix, rowvec::RowVector) = mat * ctranspose(rowvec)
+@inline A_mul_Bc(vec1::AbstractVector, vec2::AbstractVector) = vec1 * adjoint(vec2)
+@inline A_mul_Bc(mat::AbstractMatrix, rowvec::RowVector) = mat * adjoint(rowvec)
 
-@inline Ac_mul_Bc(rowvec::RowVector, vec::AbstractVector) = ctranspose(rowvec) * ctranspose(vec)
-@inline Ac_mul_Bc(vec::AbstractVector, mat::AbstractMatrix) = ctranspose(mat * vec)
+@inline Ac_mul_Bc(rowvec::RowVector, vec::AbstractVector) = adjoint(rowvec) * adjoint(vec)
+@inline Ac_mul_Bc(vec::AbstractVector, mat::AbstractMatrix) = adjoint(mat * vec)
 Ac_mul_Bc(rowvec1::RowVector, rowvec2::RowVector) = throw(DimensionMismatch("Cannot multiply two vectors"))
-@inline Ac_mul_Bc(vec::AbstractVector, rowvec::RowVector) = ctranspose(vec)*ctranspose(rowvec)
+@inline Ac_mul_Bc(vec::AbstractVector, rowvec::RowVector) = adjoint(vec)*adjoint(rowvec)
 Ac_mul_Bc(vec::AbstractVector, rowvec::AbstractVector) = throw(DimensionMismatch("Cannot multiply two transposed vectors"))
-@inline Ac_mul_Bc(mat::AbstractMatrix, rowvec::RowVector) = mat' * ctranspose(rowvec)
+@inline Ac_mul_Bc(mat::AbstractMatrix, rowvec::RowVector) = mat' * adjoint(rowvec)
 
 Ac_mul_B(::RowVector, ::AbstractVector) = throw(DimensionMismatch("Cannot multiply two vectors"))
-@inline Ac_mul_B(vec::AbstractVector, mat::AbstractMatrix) = ctranspose(Ac_mul_B(mat,vec))
-@inline Ac_mul_B(rowvec1::RowVector, rowvec2::RowVector) = ctranspose(rowvec1) * rowvec2
+@inline Ac_mul_B(vec::AbstractVector, mat::AbstractMatrix) = adjoint(Ac_mul_B(mat,vec))
+@inline Ac_mul_B(rowvec1::RowVector, rowvec2::RowVector) = adjoint(rowvec1) * rowvec2
 Ac_mul_B(vec::AbstractVector, rowvec::RowVector) = throw(DimensionMismatch("Cannot multiply two transposed vectors"))
-@inline Ac_mul_B(vec1::AbstractVector, vec2::AbstractVector) = ctranspose(vec1)*vec2
+@inline Ac_mul_B(vec1::AbstractVector, vec2::AbstractVector) = adjoint(vec1)*vec2
 
 # Left Division #
 
@@ -237,4 +237,4 @@ Ac_ldiv_B(mat::AbstractMatrix, rowvec::RowVector) = throw(DimensionMismatch("Can
 
 @inline /(rowvec::RowVector, mat::AbstractMatrix) = transpose(transpose(mat) \ transpose(rowvec))
 @inline A_rdiv_Bt(rowvec::RowVector, mat::AbstractMatrix) = transpose(mat \ transpose(rowvec))
-@inline A_rdiv_Bc(rowvec::RowVector, mat::AbstractMatrix) = ctranspose(mat  \ ctranspose(rowvec))
+@inline A_rdiv_Bc(rowvec::RowVector, mat::AbstractMatrix) = adjoint(mat  \ adjoint(rowvec))
diff --git a/base/linalg/symmetric.jl b/base/linalg/symmetric.jl
index 8d98709daaf7f..1a890da1a5007 100644
--- a/base/linalg/symmetric.jl
+++ b/base/linalg/symmetric.jl
@@ -177,7 +177,7 @@ function copy!(dest::Hermitian, src::Hermitian)
     if src.uplo == dest.uplo
         copy!(dest.data, src.data)
     else
-        ctranspose!(dest.data, src.data)
+        adjoint!(dest.data, src.data)
     end
     return dest
 end
@@ -212,16 +212,16 @@ issymmetric(A::Hermitian{<:Complex}) = isreal(A)
 issymmetric(A::Symmetric) = true
 transpose(A::Symmetric) = A
 transpose(A::Hermitian{<:Real}) = A
-ctranspose(A::Symmetric{<:Real}) = A
-function ctranspose(A::Symmetric)
-    AC = ctranspose(A.data)
+adjoint(A::Symmetric{<:Real}) = A
+function adjoint(A::Symmetric)
+    AC = adjoint(A.data)
     return Symmetric(AC, ifelse(A.uplo == 'U', :L, :U))
 end
 function transpose(A::Hermitian)
     AT = transpose(A.data)
     return Hermitian(AT, ifelse(A.uplo == 'U', :L, :U))
 end
-ctranspose(A::Hermitian) = A
+adjoint(A::Hermitian) = A
 trace(A::Hermitian) = real(trace(A.data))
 
 Base.conj(A::HermOrSym) = typeof(A)(conj(A.data), A.uplo)
@@ -307,7 +307,7 @@ A_mul_B!(C::StridedMatrix{T}, A::StridedMatrix{T}, B::Hermitian{T,<:StridedMatri
 At_mul_B(A::RealHermSymComplexSym, B::AbstractVector) = A*B
 At_mul_B(A::RealHermSymComplexSym, B::AbstractMatrix) = A*B
 A_mul_Bt(A::AbstractMatrix, B::RealHermSymComplexSym) = A*B
-## Hermitian{<:Number} and Symmetric{<:Real} are invariant to ctranspose; peel off the c
+## Hermitian{<:Number} and Symmetric{<:Real} are invariant to adjoint; peel off the c
 Ac_mul_B(A::RealHermSymComplexHerm, B::AbstractVector) = A*B
 Ac_mul_B(A::RealHermSymComplexHerm, B::AbstractMatrix) = A*B
 A_mul_Bc(A::AbstractMatrix, B::RealHermSymComplexHerm) = A*B
diff --git a/base/linalg/transpose.jl b/base/linalg/transpose.jl
index c19730f9f58fc..0baf0f9393f6e 100644
--- a/base/linalg/transpose.jl
+++ b/base/linalg/transpose.jl
@@ -1,6 +1,6 @@
 # This file is a part of Julia. License is MIT: https://julialang.org/license
 
-ctranspose(a::AbstractArray) = error("ctranspose not defined for $(typeof(a)). Consider using `permutedims` for higher-dimensional arrays.")
+adjoint(a::AbstractArray) = error("adjoint not defined for $(typeof(a)). Consider using `permutedims` for higher-dimensional arrays.")
 transpose(a::AbstractArray) = error("transpose not defined for $(typeof(a)). Consider using `permutedims` for higher-dimensional arrays.")
 
 ## Matrix transposition ##
@@ -16,14 +16,14 @@ regions.
 transpose!(B::AbstractMatrix, A::AbstractMatrix) = transpose_f!(transpose, B, A)
 
 """
-    ctranspose!(dest,src)
+    adjoint!(dest,src)
 
 Conjugate transpose array `src` and store the result in the preallocated array `dest`, which
 should have a size corresponding to `(size(src,2),size(src,1))`. No in-place transposition
 is supported and unexpected results will happen if `src` and `dest` have overlapping memory
 regions.
 """
-ctranspose!(B::AbstractMatrix, A::AbstractMatrix) = transpose_f!(ctranspose, B, A)
+adjoint!(B::AbstractMatrix, A::AbstractMatrix) = transpose_f!(adjoint, B, A)
 function transpose!(B::AbstractVector, A::AbstractMatrix)
     indices(B,1) == indices(A,2) && indices(A,1) == 1:1 || throw(DimensionMismatch("transpose"))
     copy!(B, A)
@@ -32,11 +32,11 @@ function transpose!(B::AbstractMatrix, A::AbstractVector)
     indices(B,2) == indices(A,1) && indices(B,1) == 1:1 || throw(DimensionMismatch("transpose"))
     copy!(B, A)
 end
-function ctranspose!(B::AbstractVector, A::AbstractMatrix)
+function adjoint!(B::AbstractVector, A::AbstractMatrix)
     indices(B,1) == indices(A,2) && indices(A,1) == 1:1 || throw(DimensionMismatch("transpose"))
     ccopy!(B, A)
 end
-function ctranspose!(B::AbstractMatrix, A::AbstractVector)
+function adjoint!(B::AbstractMatrix, A::AbstractVector)
     indices(B,2) == indices(A,1) && indices(B,1) == 1:1 || throw(DimensionMismatch("transpose"))
     ccopy!(B, A)
 end
@@ -85,11 +85,11 @@ function ccopy!(B, A)
     RB, RA = eachindex(B), eachindex(A)
     if RB == RA
         for i = RB
-            B[i] = ctranspose(A[i])
+            B[i] = adjoint(A[i])
         end
     else
         for (i,j) = zip(RB, RA)
-            B[i] = ctranspose(A[j])
+            B[i] = adjoint(A[j])
         end
     end
 end
@@ -119,14 +119,14 @@ function transpose(A::AbstractMatrix)
     B = similar(A, (ind2, ind1))
     transpose!(B, A)
 end
-function ctranspose(A::AbstractMatrix)
+function adjoint(A::AbstractMatrix)
     ind1, ind2 = indices(A)
     B = similar(A, (ind2, ind1))
-    ctranspose!(B, A)
+    adjoint!(B, A)
 end
 
-@inline ctranspose(A::AbstractVector{<:Real}) = transpose(A)
-@inline ctranspose(A::AbstractMatrix{<:Real}) = transpose(A)
+@inline adjoint(A::AbstractVector{<:Real}) = transpose(A)
+@inline adjoint(A::AbstractMatrix{<:Real}) = transpose(A)
 
 function copy_transpose!(B::AbstractVecOrMat, ir_dest::Range{Int}, jr_dest::Range{Int},
                          A::AbstractVecOrMat, ir_src::Range{Int}, jr_src::Range{Int})
diff --git a/base/linalg/triangular.jl b/base/linalg/triangular.jl
index 79ba4820a7fb1..12aaa748770f2 100644
--- a/base/linalg/triangular.jl
+++ b/base/linalg/triangular.jl
@@ -329,19 +329,19 @@ transpose(A::LowerTriangular) = UpperTriangular(transpose(A.data))
 transpose(A::UnitLowerTriangular) = UnitUpperTriangular(transpose(A.data))
 transpose(A::UpperTriangular) = LowerTriangular(transpose(A.data))
 transpose(A::UnitUpperTriangular) = UnitLowerTriangular(transpose(A.data))
-ctranspose(A::LowerTriangular) = UpperTriangular(ctranspose(A.data))
-ctranspose(A::UnitLowerTriangular) = UnitUpperTriangular(ctranspose(A.data))
-ctranspose(A::UpperTriangular) = LowerTriangular(ctranspose(A.data))
-ctranspose(A::UnitUpperTriangular) = UnitLowerTriangular(ctranspose(A.data))
+adjoint(A::LowerTriangular) = UpperTriangular(adjoint(A.data))
+adjoint(A::UnitLowerTriangular) = UnitUpperTriangular(adjoint(A.data))
+adjoint(A::UpperTriangular) = LowerTriangular(adjoint(A.data))
+adjoint(A::UnitUpperTriangular) = UnitLowerTriangular(adjoint(A.data))
 
 transpose!(A::LowerTriangular) = UpperTriangular(copytri!(A.data, 'L'))
 transpose!(A::UnitLowerTriangular) = UnitUpperTriangular(copytri!(A.data, 'L'))
 transpose!(A::UpperTriangular) = LowerTriangular(copytri!(A.data, 'U'))
 transpose!(A::UnitUpperTriangular) = UnitLowerTriangular(copytri!(A.data, 'U'))
-ctranspose!(A::LowerTriangular) = UpperTriangular(copytri!(A.data, 'L' , true))
-ctranspose!(A::UnitLowerTriangular) = UnitUpperTriangular(copytri!(A.data, 'L' , true))
-ctranspose!(A::UpperTriangular) = LowerTriangular(copytri!(A.data, 'U' , true))
-ctranspose!(A::UnitUpperTriangular) = UnitLowerTriangular(copytri!(A.data, 'U' , true))
+adjoint!(A::LowerTriangular) = UpperTriangular(copytri!(A.data, 'L' , true))
+adjoint!(A::UnitLowerTriangular) = UnitUpperTriangular(copytri!(A.data, 'L' , true))
+adjoint!(A::UpperTriangular) = LowerTriangular(copytri!(A.data, 'U' , true))
+adjoint!(A::UnitUpperTriangular) = UnitLowerTriangular(copytri!(A.data, 'U' , true))
 
 diag(A::LowerTriangular) = diag(A.data)
 diag(A::UnitLowerTriangular) = ones(eltype(A), size(A,1))
@@ -445,8 +445,8 @@ A_mul_B!(C::AbstractVector, A::AbstractTriangular, B::AbstractVector) = A_mul_B!
 A_mul_B!(C::AbstractMatrix, A::AbstractTriangular, B::AbstractVecOrMat) = A_mul_B!(A, copy!(C, B))
 A_mul_B!(C::AbstractVecOrMat, A::AbstractTriangular, B::AbstractVecOrMat) = A_mul_B!(A, copy!(C, B))
 A_mul_Bt!(C::AbstractVecOrMat, A::AbstractTriangular, B::AbstractVecOrMat) = A_mul_B!(A, transpose!(C, B))
-A_mul_Bc!(C::AbstractMatrix, A::AbstractTriangular, B::AbstractVecOrMat) = A_mul_B!(A, ctranspose!(C, B))
-A_mul_Bc!(C::AbstractVecOrMat, A::AbstractTriangular, B::AbstractVecOrMat) = A_mul_B!(A, ctranspose!(C, B))
+A_mul_Bc!(C::AbstractMatrix, A::AbstractTriangular, B::AbstractVecOrMat) = A_mul_B!(A, adjoint!(C, B))
+A_mul_Bc!(C::AbstractVecOrMat, A::AbstractTriangular, B::AbstractVecOrMat) = A_mul_B!(A, adjoint!(C, B))
 
 for (t, uploc, isunitc) in ((:LowerTriangular, 'L', 'N'),
                             (:UnitLowerTriangular, 'L', 'U'),
@@ -1667,9 +1667,9 @@ end
 # below might compute an unnecessary copy. Eliminating the copy requires adding
 # all the promotion logic here once again. Since these methods are probably relatively
 # rare, we chose not to bother for now.
-Ac_mul_B(A::AbstractMatrix, B::AbstractTriangular) = (*)(ctranspose(A), B)
+Ac_mul_B(A::AbstractMatrix, B::AbstractTriangular) = (*)(adjoint(A), B)
 At_mul_B(A::AbstractMatrix, B::AbstractTriangular) = (*)(transpose(A), B)
-A_mul_Bc(A::AbstractTriangular, B::AbstractMatrix) = (*)(A, ctranspose(B))
+A_mul_Bc(A::AbstractTriangular, B::AbstractMatrix) = (*)(A, adjoint(B))
 A_mul_Bt(A::AbstractTriangular, B::AbstractMatrix) = (*)(A, transpose(B))
 Ac_mul_Bc(A::AbstractTriangular, B::AbstractTriangular) = Ac_mul_B(A, B')
 Ac_mul_Bc(A::AbstractTriangular, B::AbstractMatrix) = Ac_mul_B(A, B')
@@ -1683,9 +1683,9 @@ At_mul_Bt(A::AbstractMatrix, B::AbstractTriangular) = A_mul_Bt(A.', B)
 @inline A_mul_Bt(rowvec::RowVector, A::AbstractTriangular) = transpose(A * transpose(rowvec))
 @inline A_mul_Bt(A::AbstractTriangular, rowvec::RowVector) = A * transpose(rowvec)
 @inline At_mul_Bt(A::AbstractTriangular, rowvec::RowVector) = A.' * transpose(rowvec)
-@inline A_mul_Bc(rowvec::RowVector, A::AbstractTriangular) = ctranspose(A * ctranspose(rowvec))
-@inline A_mul_Bc(A::AbstractTriangular, rowvec::RowVector) = A * ctranspose(rowvec)
-@inline Ac_mul_Bc(A::AbstractTriangular, rowvec::RowVector) = A' * ctranspose(rowvec)
+@inline A_mul_Bc(rowvec::RowVector, A::AbstractTriangular) = adjoint(A * adjoint(rowvec))
+@inline A_mul_Bc(A::AbstractTriangular, rowvec::RowVector) = A * adjoint(rowvec)
+@inline Ac_mul_Bc(A::AbstractTriangular, rowvec::RowVector) = A' * adjoint(rowvec)
 
 @inline /(rowvec::RowVector, A::Union{UpperTriangular,LowerTriangular}) = transpose(transpose(A) \ transpose(rowvec))
 @inline /(rowvec::RowVector, A::Union{UnitUpperTriangular,UnitLowerTriangular}) = transpose(transpose(A) \ transpose(rowvec))
@@ -1693,8 +1693,8 @@ At_mul_Bt(A::AbstractMatrix, B::AbstractTriangular) = A_mul_Bt(A.', B)
 @inline A_rdiv_Bt(rowvec::RowVector, A::Union{UpperTriangular,LowerTriangular}) = transpose(A \ transpose(rowvec))
 @inline A_rdiv_Bt(rowvec::RowVector, A::Union{UnitUpperTriangular,UnitLowerTriangular}) = transpose(A \ transpose(rowvec))
 
-@inline A_rdiv_Bc(rowvec::RowVector, A::Union{UpperTriangular,LowerTriangular}) = ctranspose(A \ ctranspose(rowvec))
-@inline A_rdiv_Bc(rowvec::RowVector, A::Union{UnitUpperTriangular,UnitLowerTriangular}) = ctranspose(A \ ctranspose(rowvec))
+@inline A_rdiv_Bc(rowvec::RowVector, A::Union{UpperTriangular,LowerTriangular}) = adjoint(A \ adjoint(rowvec))
+@inline A_rdiv_Bc(rowvec::RowVector, A::Union{UnitUpperTriangular,UnitLowerTriangular}) = adjoint(A \ adjoint(rowvec))
 
 \(::Union{UpperTriangular,LowerTriangular}, ::RowVector) = throw(DimensionMismatch("Cannot left-divide matrix by transposed vector"))
 \(::Union{UnitUpperTriangular,UnitLowerTriangular}, ::RowVector) = throw(DimensionMismatch("Cannot left-divide matrix by transposed vector"))
diff --git a/base/linalg/tridiag.jl b/base/linalg/tridiag.jl
index 5fcaf92009201..8e0bd800eaef6 100644
--- a/base/linalg/tridiag.jl
+++ b/base/linalg/tridiag.jl
@@ -125,7 +125,7 @@ broadcast(::typeof(floor), ::Type{T}, M::SymTridiagonal) where {T<:Integer} = Sy
 broadcast(::typeof(ceil), ::Type{T}, M::SymTridiagonal) where {T<:Integer} = SymTridiagonal(ceil.(T, M.dv), ceil.(T, M.ev))
 
 transpose(M::SymTridiagonal) = M #Identity operation
-ctranspose(M::SymTridiagonal) = conj(M)
+adjoint(M::SymTridiagonal) = conj(M)
 
 function diag(M::SymTridiagonal{T}, n::Integer=0) where T
     absn = abs(n)
@@ -539,7 +539,7 @@ broadcast(::typeof(ceil), ::Type{T}, M::Tridiagonal) where {T<:Integer} =
     Tridiagonal(ceil.(T, M.dl), ceil.(T, M.d), ceil.(T, M.du), ceil.(T, M.du2))
 
 transpose(M::Tridiagonal) = Tridiagonal(M.du, M.d, M.dl)
-ctranspose(M::Tridiagonal) = conj(transpose(M))
+adjoint(M::Tridiagonal) = conj(transpose(M))
 
 function diag(M::Tridiagonal{T}, n::Integer=0) where T
     if n == 0
diff --git a/base/linalg/uniformscaling.jl b/base/linalg/uniformscaling.jl
index b0feaac7d74f0..c1e2b86da06de 100644
--- a/base/linalg/uniformscaling.jl
+++ b/base/linalg/uniformscaling.jl
@@ -1,6 +1,6 @@
 # This file is a part of Julia. License is MIT: https://julialang.org/license
 
-import Base: copy, ctranspose, getindex, show, transpose, one, zero, inv,
+import Base: copy, adjoint, getindex, show, transpose, one, zero, inv,
              hcat, vcat, hvcat
 import Base.LinAlg: SingularException
 
@@ -63,7 +63,7 @@ end
 copy(J::UniformScaling) = UniformScaling(J.λ)
 
 transpose(J::UniformScaling) = J
-ctranspose(J::UniformScaling) = UniformScaling(conj(J.λ))
+adjoint(J::UniformScaling) = UniformScaling(conj(J.λ))
 
 one(::Type{UniformScaling{T}}) where {T} = UniformScaling(one(T))
 one(J::UniformScaling{T}) where {T} = one(UniformScaling{T})
diff --git a/base/number.jl b/base/number.jl
index 1a95f2dee6a77..2732e98b825ba 100644
--- a/base/number.jl
+++ b/base/number.jl
@@ -165,7 +165,7 @@ copysign(x::Real, y::Real) = ifelse(signbit(x)!=signbit(y), -x, +x)
 
 conj(x::Real) = x
 transpose(x::Number) = x
-ctranspose(x::Number) = conj(x)
+adjoint(x::Number) = conj(x)
 angle(z::Real) = atan2(zero(z), z)
 
 """
diff --git a/base/operators.jl b/base/operators.jl
index 08fa05c50705c..138e6b7c2dcf1 100644
--- a/base/operators.jl
+++ b/base/operators.jl
@@ -740,7 +740,7 @@ fldmod1(x::T, y::T) where {T<:Integer} = (fld1(x,y), mod1(x,y))
 # transpose
 
 """
-    ctranspose(A)
+    adjoint(A)
 
 The conjugate transposition operator (`'`).
 
@@ -751,13 +751,13 @@ julia> A =  [3+2im 9+2im; 8+7im  4+6im]
  3+2im  9+2im
  8+7im  4+6im
 
-julia> ctranspose(A)
+julia> adjoint(A)
 2×2 Array{Complex{Int64},2}:
  3-2im  8-7im
  9-2im  4-6im
 ```
 """
-ctranspose(x) = conj(transpose(x))
+adjoint(x) = conj(transpose(x))
 conj(x) = x
 
 # transposed multiply
@@ -767,21 +767,21 @@ conj(x) = x
 
 For matrices or vectors ``A`` and ``B``, calculates ``Aᴴ⋅B``.
 """
-Ac_mul_B(a,b)  = ctranspose(a)*b
+Ac_mul_B(a,b)  = adjoint(a)*b
 
 """
     A_mul_Bc(A, B)
 
 For matrices or vectors ``A`` and ``B``, calculates ``A⋅Bᴴ``.
 """
-A_mul_Bc(a,b)  = a*ctranspose(b)
+A_mul_Bc(a,b)  = a*adjoint(b)
 
 """
     Ac_mul_Bc(A, B)
 
 For matrices or vectors ``A`` and ``B``, calculates ``Aᴴ Bᴴ``.
 """
-Ac_mul_Bc(a,b) = ctranspose(a)*ctranspose(b)
+Ac_mul_Bc(a,b) = adjoint(a)*adjoint(b)
 
 """
     At_mul_B(A, B)
@@ -811,21 +811,21 @@ At_mul_Bt(a,b) = transpose(a)*transpose(b)
 
 For matrices or vectors ``A`` and ``B``, calculates ``Aᴴ / B``.
 """
-Ac_rdiv_B(a,b)  = ctranspose(a)/b
+Ac_rdiv_B(a,b)  = adjoint(a)/b
 
 """
     A_rdiv_Bc(A, B)
 
 For matrices or vectors ``A`` and ``B``, calculates ``A / Bᴴ``.
 """
-A_rdiv_Bc(a,b)  = a/ctranspose(b)
+A_rdiv_Bc(a,b)  = a/adjoint(b)
 
 """
     Ac_rdiv_Bc(A, B)
 
 For matrices or vectors ``A`` and ``B``, calculates ``Aᴴ / Bᴴ``.
 """
-Ac_rdiv_Bc(a,b) = ctranspose(a)/ctranspose(b)
+Ac_rdiv_Bc(a,b) = adjoint(a)/adjoint(b)
 
 """
     At_rdiv_B(A, B)
@@ -853,21 +853,21 @@ At_rdiv_Bt(a,b) = transpose(a)/transpose(b)
 
 For matrices or vectors ``A`` and ``B``, calculates ``Aᴴ`` \\ ``B``.
 """
-Ac_ldiv_B(a,b)  = ctranspose(a)\b
+Ac_ldiv_B(a,b)  = adjoint(a)\b
 
 """
     A_ldiv_Bc(A, B)
 
 For matrices or vectors ``A`` and ``B``, calculates ``A`` \\ ``Bᴴ``.
 """
-A_ldiv_Bc(a,b)  = a\ctranspose(b)
+A_ldiv_Bc(a,b)  = a\adjoint(b)
 
 """
     Ac_ldiv_Bc(A, B)
 
 For matrices or vectors ``A`` and ``B``, calculates ``Aᴴ`` \\ ``Bᴴ``.
 """
-Ac_ldiv_Bc(a,b) = ctranspose(a)\ctranspose(b)
+Ac_ldiv_Bc(a,b) = adjoint(a)\adjoint(b)
 
 """
     At_ldiv_B(A, B)
diff --git a/base/sparse/cholmod.jl b/base/sparse/cholmod.jl
index 5351a0717c041..2644bd7b5cd41 100644
--- a/base/sparse/cholmod.jl
+++ b/base/sparse/cholmod.jl
@@ -3,7 +3,7 @@
 module CHOLMOD
 
 import Base: (*), convert, copy, eltype, getindex, show, size,
-             IndexStyle, IndexLinear, IndexCartesian, ctranspose
+             IndexStyle, IndexLinear, IndexCartesian, adjoint
 
 import Base.LinAlg: (\), A_mul_Bc, A_mul_Bt, Ac_ldiv_B, Ac_mul_B, At_ldiv_B, At_mul_B,
                  cholfact, cholfact!, det, diag, ishermitian, isposdef,
@@ -1209,15 +1209,15 @@ IndexStyle(::Dense) = IndexLinear()
 size(FC::FactorComponent, i::Integer) = size(FC.F, i)
 size(FC::FactorComponent) = size(FC.F)
 
-ctranspose(FC::FactorComponent{Tv,:L}) where {Tv} = FactorComponent{Tv,:U}(FC.F)
-ctranspose(FC::FactorComponent{Tv,:U}) where {Tv} = FactorComponent{Tv,:L}(FC.F)
-ctranspose(FC::FactorComponent{Tv,:PtL}) where {Tv} = FactorComponent{Tv,:UP}(FC.F)
-ctranspose(FC::FactorComponent{Tv,:UP}) where {Tv} = FactorComponent{Tv,:PtL}(FC.F)
-ctranspose(FC::FactorComponent{Tv,:D}) where {Tv} = FC
-ctranspose(FC::FactorComponent{Tv,:LD}) where {Tv} = FactorComponent{Tv,:DU}(FC.F)
-ctranspose(FC::FactorComponent{Tv,:DU}) where {Tv} = FactorComponent{Tv,:LD}(FC.F)
-ctranspose(FC::FactorComponent{Tv,:PtLD}) where {Tv} = FactorComponent{Tv,:DUP}(FC.F)
-ctranspose(FC::FactorComponent{Tv,:DUP}) where {Tv} = FactorComponent{Tv,:PtLD}(FC.F)
+adjoint(FC::FactorComponent{Tv,:L}) where {Tv} = FactorComponent{Tv,:U}(FC.F)
+adjoint(FC::FactorComponent{Tv,:U}) where {Tv} = FactorComponent{Tv,:L}(FC.F)
+adjoint(FC::FactorComponent{Tv,:PtL}) where {Tv} = FactorComponent{Tv,:UP}(FC.F)
+adjoint(FC::FactorComponent{Tv,:UP}) where {Tv} = FactorComponent{Tv,:PtL}(FC.F)
+adjoint(FC::FactorComponent{Tv,:D}) where {Tv} = FC
+adjoint(FC::FactorComponent{Tv,:LD}) where {Tv} = FactorComponent{Tv,:DU}(FC.F)
+adjoint(FC::FactorComponent{Tv,:DU}) where {Tv} = FactorComponent{Tv,:LD}(FC.F)
+adjoint(FC::FactorComponent{Tv,:PtLD}) where {Tv} = FactorComponent{Tv,:DUP}(FC.F)
+adjoint(FC::FactorComponent{Tv,:DUP}) where {Tv} = FactorComponent{Tv,:PtLD}(FC.F)
 
 function getindex(A::Dense, i::Integer)
     s = unsafe_load(pointer(A))
@@ -1651,8 +1651,8 @@ function (\)(L::FactorComponent, B::SparseVecOrMat)
     sparse(L\Sparse(B,0))
 end
 
-Ac_ldiv_B(L::FactorComponent, B) = ctranspose(L)\B
-Ac_ldiv_B(L::FactorComponent, B::RowVector) = ctranspose(L)\B # ambiguity
+Ac_ldiv_B(L::FactorComponent, B) = adjoint(L)\B
+Ac_ldiv_B(L::FactorComponent, B::RowVector) = adjoint(L)\B # ambiguity
 
 (\)(L::Factor{T}, B::Dense{T}) where {T<:VTypes} = solve(CHOLMOD_A, L, B)
 # Explicit typevars are necessary to avoid ambiguities with defs in linalg/factorizations.jl
diff --git a/base/sparse/linalg.jl b/base/sparse/linalg.jl
index ad56b6ed057cc..5ae8cdda4129c 100644
--- a/base/sparse/linalg.jl
+++ b/base/sparse/linalg.jl
@@ -44,7 +44,7 @@ end
 # In matrix-vector multiplication, the correct orientation of the vector is assumed.
 
 for (f, op, transp) in ((:A_mul_B, :identity, false),
-                        (:Ac_mul_B, :ctranspose, true),
+                        (:Ac_mul_B, :adjoint, true),
                         (:At_mul_B, :transpose, true))
     @eval begin
         function $(Symbol(f,:!))(α::Number, A::SparseMatrixCSC, B::StridedVecOrMat, β::Number, C::StridedVecOrMat)
@@ -124,11 +124,11 @@ end
 
 (*)(A::SparseMatrixCSC{Tv,Ti}, B::SparseMatrixCSC{Tv,Ti}) where {Tv,Ti} = spmatmul(A,B)
 for (f, opA, opB) in ((:A_mul_Bt, :identity, :transpose),
-                      (:A_mul_Bc, :identity, :ctranspose),
+                      (:A_mul_Bc, :identity, :adjoint),
                       (:At_mul_B, :transpose, :identity),
-                      (:Ac_mul_B, :ctranspose, :identity),
+                      (:Ac_mul_B, :adjoint, :identity),
                       (:At_mul_Bt, :transpose, :transpose),
-                      (:Ac_mul_Bc, :ctranspose, :ctranspose))
+                      (:Ac_mul_Bc, :adjoint, :adjoint))
     @eval begin
         function ($f)(A::SparseMatrixCSC{Tv,Ti}, B::SparseMatrixCSC{Tv,Ti}) where {Tv,Ti}
             spmatmul(($opA)(A), ($opB)(B))
diff --git a/base/sparse/sparse.jl b/base/sparse/sparse.jl
index 28126d551c10b..81cb3f3a95a1a 100644
--- a/base/sparse/sparse.jl
+++ b/base/sparse/sparse.jl
@@ -14,12 +14,12 @@ import Base.LinAlg: At_ldiv_B!, Ac_ldiv_B!, A_rdiv_B!, A_rdiv_Bc!
 
 import Base: @get!, acos, acosd, acot, acotd, acsch, asech, asin, asind, asinh,
     atan, atand, atanh, broadcast!, chol, conj!, cos, cosc, cosd, cosh, cospi, cot,
-    cotd, coth, countnz, csc, cscd, csch, ctranspose!, diag, diff, done, dot, eig,
+    cotd, coth, countnz, csc, cscd, csch, adjoint!, diag, diff, done, dot, eig,
     exp10, exp2, eye, findn, floor, hash, indmin, inv, issymmetric, istril, istriu,
     log10, log2, lu, next, sec, secd, sech, show, sin,
     sinc, sind, sinh, sinpi, squeeze, start, sum, summary, tan,
     tand, tanh, trace, transpose!, tril!, triu!, trunc, vecnorm, abs, abs2,
-    broadcast, ceil, complex, cond, conj, convert, copy, copy!, ctranspose, diagm,
+    broadcast, ceil, complex, cond, conj, convert, copy, copy!, adjoint, diagm,
     exp, expm1, factorize, find, findmax, findmin, findnz, float, full, getindex,
     vcat, hcat, hvcat, cat, imag, indmax, ishermitian, kron, length, log, log1p, max, min,
     maximum, minimum, norm, one, promote_eltype, real, reinterpret, reshape, rot180,
diff --git a/base/sparse/sparsematrix.jl b/base/sparse/sparsematrix.jl
index 0c501c8c72bfa..4bd62a54a25b8 100644
--- a/base/sparse/sparsematrix.jl
+++ b/base/sparse/sparsematrix.jl
@@ -853,14 +853,14 @@ function ftranspose!(X::SparseMatrixCSC{Tv,Ti}, A::SparseMatrixCSC{Tv,Ti}, f::Fu
     halfperm!(X, A, 1:A.n, f)
 end
 transpose!(X::SparseMatrixCSC{Tv,Ti}, A::SparseMatrixCSC{Tv,Ti}) where {Tv,Ti} = ftranspose!(X, A, identity)
-ctranspose!(X::SparseMatrixCSC{Tv,Ti}, A::SparseMatrixCSC{Tv,Ti}) where {Tv,Ti} = ftranspose!(X, A, conj)
+adjoint!(X::SparseMatrixCSC{Tv,Ti}, A::SparseMatrixCSC{Tv,Ti}) where {Tv,Ti} = ftranspose!(X, A, conj)
 
 function ftranspose(A::SparseMatrixCSC{Tv,Ti}, f::Function) where {Tv,Ti}
     X = SparseMatrixCSC(A.n, A.m, Vector{Ti}(A.m+1), Vector{Ti}(nnz(A)), Vector{Tv}(nnz(A)))
     halfperm!(X, A, 1:A.n, f)
 end
 transpose(A::SparseMatrixCSC) = ftranspose(A, identity)
-ctranspose(A::SparseMatrixCSC) = ftranspose(A, conj)
+adjoint(A::SparseMatrixCSC) = ftranspose(A, conj)
 
 """
     unchecked_noalias_permute!(X::SparseMatrixCSC{Tv,Ti},
diff --git a/base/sparse/sparsevector.jl b/base/sparse/sparsevector.jl
index 80225e4d328c8..09bb230524f9d 100644
--- a/base/sparse/sparsevector.jl
+++ b/base/sparse/sparsevector.jl
@@ -1401,7 +1401,7 @@ vecnorm(x::SparseVectorUnion, p::Real=2) = vecnorm(nonzeros(x), p)
 # Transpose
 # (The only sparse matrix structure in base is CSC, so a one-row sparse matrix is worse than dense)
 @inline transpose(sv::SparseVector) = RowVector(sv)
-@inline ctranspose(sv::SparseVector) = RowVector(conj(sv))
+@inline adjoint(sv::SparseVector) = RowVector(conj(sv))
 
 ### BLAS Level-1
 
diff --git a/doc/src/manual/functions.md b/doc/src/manual/functions.md
index 2f417d9466596..a5d28296daed5 100644
--- a/doc/src/manual/functions.md
+++ b/doc/src/manual/functions.md
@@ -163,7 +163,7 @@ A few special expressions correspond to calls to functions with non-obvious name
 | `[A B C ...]`     | [`hcat()`](@ref)       |
 | `[A; B; C; ...]`  | [`vcat()`](@ref)       |
 | `[A B; C D; ...]` | [`hvcat()`](@ref)      |
-| `A'`              | [`ctranspose()`](@ref) |
+| `A'`              | [`adjoint()`](@ref) |
 | `A.'`             | [`transpose()`](@ref)  |
 | `1:n`             | [`colon()`](@ref)      |
 | `A[i]`            | [`getindex()`](@ref)   |
diff --git a/doc/src/stdlib/linalg.md b/doc/src/stdlib/linalg.md
index e9421cb216857..935ea52e50a04 100644
--- a/doc/src/stdlib/linalg.md
+++ b/doc/src/stdlib/linalg.md
@@ -109,8 +109,8 @@ Base.LinAlg.RowVector
 Base.LinAlg.ConjArray
 Base.transpose
 Base.transpose!
-Base.ctranspose
-Base.ctranspose!
+Base.adjoint
+Base.adjoint!
 Base.LinAlg.eigs(::Any)
 Base.LinAlg.eigs(::Any, ::Any)
 Base.LinAlg.svds
diff --git a/src/julia-syntax.scm b/src/julia-syntax.scm
index 42cbb9fecf7d7..386c423d3bf65 100644
--- a/src/julia-syntax.scm
+++ b/src/julia-syntax.scm
@@ -2369,7 +2369,7 @@
                      ,.(apply append rows)))
             `(call (top typed_vcat) ,t ,@a)))))
 
-   '|'|  (lambda (e) `(call ctranspose ,(expand-forms (cadr e))))
+   '|'|  (lambda (e) `(call adjoint ,(expand-forms (cadr e))))
    '|.'| (lambda (e) `(call  transpose ,(expand-forms (cadr e))))
 
    'generator
diff --git a/test/arrayops.jl b/test/arrayops.jl
index 9055e55ba49df..776e73fab5e9b 100644
--- a/test/arrayops.jl
+++ b/test/arrayops.jl
@@ -1685,12 +1685,12 @@ end
     d = ones(Complex,6)
     @test_throws DimensionMismatch transpose!(a,d)
     @test_throws DimensionMismatch transpose!(d,a)
-    @test_throws DimensionMismatch ctranspose!(a,d)
-    @test_throws DimensionMismatch ctranspose!(d,a)
+    @test_throws DimensionMismatch adjoint!(a,d)
+    @test_throws DimensionMismatch adjoint!(d,a)
     @test_throws DimensionMismatch transpose!(b,c)
-    @test_throws DimensionMismatch ctranspose!(b,c)
+    @test_throws DimensionMismatch adjoint!(b,c)
     @test_throws DimensionMismatch transpose!(c,b)
-    @test_throws DimensionMismatch ctranspose!(c,b)
+    @test_throws DimensionMismatch adjoint!(c,b)
     transpose!(b,a)
     @test b == ones(Complex,5)
     b = ones(Complex,5)
@@ -1698,10 +1698,10 @@ end
     transpose!(a,b)
     @test a == ones(Complex,1,5)
     b = zeros(Complex,5)
-    ctranspose!(b,a)
+    adjoint!(b,a)
     @test b == ones(Complex,5)
     a = zeros(Complex,1,5)
-    ctranspose!(a,b)
+    adjoint!(a,b)
     @test a == ones(Complex,1,5)
 end
 
diff --git a/test/distributed_exec.jl b/test/distributed_exec.jl
index 0b0893d76005f..65de2c21a4a9d 100644
--- a/test/distributed_exec.jl
+++ b/test/distributed_exec.jl
@@ -469,7 +469,7 @@ d[5,1:2:4,8] = 19
 AA = rand(4,2)
 A = @inferred(convert(SharedArray, AA))
 B = @inferred(convert(SharedArray, AA'))
-@test B*A == ctranspose(AA)*AA
+@test B*A == adjoint(AA)*AA
 
 d=SharedArray{Int64,2}((10,10); init = D->fill!(D.loc_subarr_1d, myid()), pids=[id_me, id_other])
 d2 = map(x->1, d)
diff --git a/test/linalg/bidiag.jl b/test/linalg/bidiag.jl
index 7c9d85b43e5cc..2ecd02da6b572 100644
--- a/test/linalg/bidiag.jl
+++ b/test/linalg/bidiag.jl
@@ -105,7 +105,7 @@ srand(1)
             @test Array(imag(T)) == imag(diagm(dv)) + imag(diagm(ev, uplo == :U ? 1 : -1))
         end
 
-        @testset for func in (conj, transpose, ctranspose)
+        @testset for func in (conj, transpose, adjoint)
             @test func(func(T)) == T
         end
 
diff --git a/test/linalg/diagonal.jl b/test/linalg/diagonal.jl
index b1e8df0bd3ffb..d9d5805b8915c 100644
--- a/test/linalg/diagonal.jl
+++ b/test/linalg/diagonal.jl
@@ -100,7 +100,7 @@ srand(1)
                     @test A_ldiv_B!(D, copy(U)) ≈ DM\U atol=atol_three
                     @test At_ldiv_B!(D, copy(U)) ≈ DM\U atol=atol_three
                     @test Ac_ldiv_B!(conj(D), copy(U)) ≈ DM\U atol=atol_three
-                    Uc = ctranspose(U)
+                    Uc = adjoint(U)
                     target = scale!(Uc, inv.(D.diag))
                     @test A_rdiv_B!(Uc, D) ≈ target atol=atol_three
                     @test_throws DimensionMismatch A_rdiv_B!(eye(elty, n-1), D)
@@ -222,7 +222,7 @@ srand(1)
         @test transpose(D) == D
         if elty <: BlasComplex
             @test Array(conj(D)) ≈ conj(DM)
-            @test ctranspose(D) == conj(D)
+            @test adjoint(D) == conj(D)
         end
         # Translates to Ac/t_mul_B, which is specialized after issue 21286
         @test(D' * v == conj(D) * v)
diff --git a/test/linalg/generic.jl b/test/linalg/generic.jl
index 4b92bf758c6fe..c6a0115b65697 100644
--- a/test/linalg/generic.jl
+++ b/test/linalg/generic.jl
@@ -371,6 +371,6 @@ Base.transpose(a::ModInt{n}) where {n} = a  # see Issue 20978
 end
 
 @testset "fallback throws properly for AbstractArrays with dimension > 2" begin
-    @test_throws ErrorException ctranspose(rand(2,2,2,2))
+    @test_throws ErrorException adjoint(rand(2,2,2,2))
     @test_throws ErrorException transpose(rand(2,2,2,2))
 end
diff --git a/test/linalg/givens.jl b/test/linalg/givens.jl
index 49e0158491a1d..c13ddd2fcbb3b 100644
--- a/test/linalg/givens.jl
+++ b/test/linalg/givens.jl
@@ -22,8 +22,8 @@ using Base.Test
                 @test A_mul_B!(G,eye(elty,10,10)) == [G[i,j] for i=1:10,j=1:10]
 
                 @testset "transposes" begin
-                    @test ctranspose(G)*G*eye(10) ≈ eye(elty, 10)
-                    @test ctranspose(R)*(R*eye(10)) ≈ eye(elty, 10)
+                    @test adjoint(G)*G*eye(10) ≈ eye(elty, 10)
+                    @test adjoint(R)*(R*eye(10)) ≈ eye(elty, 10)
                     @test_throws ErrorException transpose(G)
                     @test_throws ErrorException transpose(R)
                 end
@@ -38,9 +38,9 @@ using Base.Test
         @test norm(R*eye(elty, 10)) ≈ one(elty)
 
         G, _ = givens(one(elty),zero(elty),9,10)
-        @test ctranspose(G*eye(elty,10))*(G*eye(elty,10)) ≈ eye(elty, 10)
+        @test adjoint(G*eye(elty,10))*(G*eye(elty,10)) ≈ eye(elty, 10)
         K, _ = givens(zero(elty),one(elty),9,10)
-        @test ctranspose(K*eye(elty,10))*(K*eye(elty,10)) ≈ eye(elty, 10)
+        @test adjoint(K*eye(elty,10))*(K*eye(elty,10)) ≈ eye(elty, 10)
 
         @testset "Givens * vectors" begin
             if isa(A, Array)
diff --git a/test/linalg/qr.jl b/test/linalg/qr.jl
index 282321086fd1a..25728ee0c8572 100644
--- a/test/linalg/qr.jl
+++ b/test/linalg/qr.jl
@@ -150,11 +150,11 @@ end
 
 @testset "transpose errors" begin
     @test_throws ErrorException transpose(qrfact(randn(3,3)))
-    @test_throws ErrorException ctranspose(qrfact(randn(3,3)))
+    @test_throws ErrorException adjoint(qrfact(randn(3,3)))
     @test_throws ErrorException transpose(qrfact(randn(3,3), Val(false)))
-    @test_throws ErrorException ctranspose(qrfact(randn(3,3), Val(false)))
+    @test_throws ErrorException adjoint(qrfact(randn(3,3), Val(false)))
     @test_throws ErrorException transpose(qrfact(big.(randn(3,3))))
-    @test_throws ErrorException ctranspose(qrfact(big.(randn(3,3))))
+    @test_throws ErrorException adjoint(qrfact(big.(randn(3,3))))
 end
 
 @testset "Issue 7304" begin
diff --git a/test/linalg/symmetric.jl b/test/linalg/symmetric.jl
index 54cfb2753af27..296d599390d89 100644
--- a/test/linalg/symmetric.jl
+++ b/test/linalg/symmetric.jl
@@ -131,16 +131,16 @@ end
                 end
             end
 
-            @testset "transpose, ctranspose" begin
+            @testset "transpose, adjoint" begin
                 S = Symmetric(asym)
                 H = Hermitian(aherm)
                 @test  transpose(S) === S == asym
-                @test ctranspose(H) === H == aherm
+                @test adjoint(H) === H == aherm
                 if eltya <: Real
-                    @test ctranspose(S) === S == asym
+                    @test adjoint(S) === S == asym
                     @test  transpose(H) === H == aherm
                 else
-                    @test ctranspose(S) ==  Symmetric(conj(asym))
+                    @test adjoint(S) ==  Symmetric(conj(asym))
                     @test  transpose(H) ==  Hermitian(transpose(aherm))
                 end
             end
diff --git a/test/linalg/triangular.jl b/test/linalg/triangular.jl
index f6dbe41552cc0..203d0640ca1a2 100644
--- a/test/linalg/triangular.jl
+++ b/test/linalg/triangular.jl
@@ -22,7 +22,7 @@ for elty1 in (Float32, Float64, BigFloat, Complex64, Complex128, Complex{BigFloa
                         (UnitLowerTriangular, :L))
 
         # Construct test matrix
-        A1 = t1(elty1 == Int ? rand(1:7, n, n) : convert(Matrix{elty1}, (elty1 <: Complex ? complex.(randn(n, n), randn(n, n)) : randn(n, n)) |> t -> chol(t't) |> t -> uplo1 == :U ? t : ctranspose(t)))
+        A1 = t1(elty1 == Int ? rand(1:7, n, n) : convert(Matrix{elty1}, (elty1 <: Complex ? complex.(randn(n, n), randn(n, n)) : randn(n, n)) |> t -> chol(t't) |> t -> uplo1 == :U ? t : adjoint(t)))
 
 
         debug && println("elty1: $elty1, A1: $t1")
@@ -132,15 +132,15 @@ for elty1 in (Float32, Float64, BigFloat, Complex64, Complex128, Complex{BigFloa
             # transpose
             @test full(A1.') == full(A1).'
             @test full(viewA1.') == full(viewA1).'
-            # ctranspose
+            # adjoint
             @test full(A1') == full(A1)'
             @test full(viewA1') == full(viewA1)'
             # transpose!
             @test transpose!(copy(A1)) == A1.'
             @test transpose!(t1(view(copy(A1).data, vrange, vrange))) == viewA1.'
-            # ctranspose!
-            @test ctranspose!(copy(A1)) == A1'
-            @test ctranspose!(t1(view(copy(A1).data, vrange, vrange))) == viewA1'
+            # adjoint!
+            @test adjoint!(copy(A1)) == A1'
+            @test adjoint!(t1(view(copy(A1).data, vrange, vrange))) == viewA1'
         end
 
         # diag
@@ -274,7 +274,7 @@ for elty1 in (Float32, Float64, BigFloat, Complex64, Complex128, Complex{BigFloa
 
                 debug && println("elty1: $elty1, A1: $t1, elty2: $elty2")
 
-                A2 = t2(elty2 == Int ? rand(1:7, n, n) : convert(Matrix{elty2}, (elty2 <: Complex ? complex.(randn(n, n), randn(n, n)) : randn(n, n)) |> t -> chol(t't) |> t -> uplo2 == :U ? t : ctranspose(t)))
+                A2 = t2(elty2 == Int ? rand(1:7, n, n) : convert(Matrix{elty2}, (elty2 <: Complex ? complex.(randn(n, n), randn(n, n)) : randn(n, n)) |> t -> chol(t't) |> t -> uplo2 == :U ? t : adjoint(t)))
 
                 # Convert
                 if elty1 <: Real && !(elty2 <: Integer)
diff --git a/test/linalg/tridiag.jl b/test/linalg/tridiag.jl
index 6027c7981fe9c..634e0de68e124 100644
--- a/test/linalg/tridiag.jl
+++ b/test/linalg/tridiag.jl
@@ -58,7 +58,7 @@ B = randn(n,2)
     @testset "elementary operations" begin
         @test conj(T) == Tridiagonal(conj(dl), conj(d), conj(du))
         @test transpose(T) == Tridiagonal(du, d, dl)
-        @test ctranspose(T) == Tridiagonal(conj(du), conj(d), conj(dl))
+        @test adjoint(T) == Tridiagonal(conj(du), conj(d), conj(dl))
 
         @test abs.(T) == Tridiagonal(abs.(dl),abs.(d),abs.(du))
         if elty <: Real
@@ -258,7 +258,7 @@ let n = 12 #Size of matrix problem to test
                 @test_throws ArgumentError diag(A,n+1)
             end
             @testset "Idempotent tests" begin
-                for func in (conj, transpose, ctranspose)
+                for func in (conj, transpose, adjoint)
                     @test func(func(A)) == A
                 end
             end
diff --git a/test/operators.jl b/test/operators.jl
index 72effdbf33f51..e661968bf8e43 100644
--- a/test/operators.jl
+++ b/test/operators.jl
@@ -49,8 +49,6 @@ p = 1=>:foo
 @test xor(2) == 2
 @test (⊻)(2) == 2
 
-# @test ctranspose('a') == 'a' # (c)transpose of Chars no longer supported
-
 @test_throws ArgumentError Base.scalarmin(['a','b'],['c','d'])
 @test_throws ArgumentError Base.scalarmin('a',['c','d'])
 @test_throws ArgumentError Base.scalarmin(['a','b'],'c')
diff --git a/test/sparse/sparse.jl b/test/sparse/sparse.jl
index 38e25d0a3a5a8..8e43393ad1e61 100644
--- a/test/sparse/sparse.jl
+++ b/test/sparse/sparse.jl
@@ -401,11 +401,11 @@ end
             fullAt = transpose(Array(A))
             @test transpose(A) == fullAt
             @test transpose!(similar(At), A) == fullAt
-            # ctranspose[!]
+            # adjoint[!]
             C = A + im*A/2
-            fullCh = ctranspose(Array(C))
-            @test ctranspose(C) == fullCh
-            @test ctranspose!(similar(sparse(fullCh)), C) == fullCh
+            fullCh = adjoint(Array(C))
+            @test adjoint(C) == fullCh
+            @test adjoint!(similar(sparse(fullCh)), C) == fullCh
             # permute[!]
             p = randperm(m)
             q = randperm(n)
@@ -423,7 +423,7 @@ end
 @testset "transpose of SubArrays" begin
     A = view(sprandn(10, 10, 0.3), 1:4, 1:4)
     @test  transpose(Array(A)) == Array(transpose(A))
-    @test ctranspose(Array(A)) == Array(ctranspose(A))
+    @test adjoint(Array(A)) == Array(adjoint(A))
 end
 
 @testset "exp" begin
diff --git a/test/sparse/sparsevector.jl b/test/sparse/sparsevector.jl
index 4a61940f53677..4d849f2080b9c 100644
--- a/test/sparse/sparsevector.jl
+++ b/test/sparse/sparsevector.jl
@@ -296,7 +296,7 @@ let a = SparseVector(8, [2, 5, 6], Int32[12, 35, 72])
     @test complex(acp) == acp
     @test isa(acp, SparseVector{Complex128,Int})
     @test exact_equal(acp, SparseVector(8, [2, 5, 6], complex([12., 35., 72.])))
-    @test sparsevec(ctranspose(ctranspose(acp))) == acp
+    @test sparsevec(adjoint(adjoint(acp))) == acp
 end
 
 let x1 = SparseVector(8, [2, 5, 6], [12.2, 1.4, 5.0])