diff --git a/include/boost/math/special_functions/detail/hypergeometric_1F1_recurrence.hpp b/include/boost/math/special_functions/detail/hypergeometric_1F1_recurrence.hpp
index 300d95574f..db5ea1da06 100644
--- a/include/boost/math/special_functions/detail/hypergeometric_1F1_recurrence.hpp
+++ b/include/boost/math/special_functions/detail/hypergeometric_1F1_recurrence.hpp
@@ -313,7 +313,7 @@
     }
     if (ak - 1 == b)
     {
-       // When ak - 1 == b are recursion coefficients dissappear to zero and
+       // When ak - 1 == b are recursion coefficients disappear to zero and
        // we end up with a NaN result.  Reduce the recursion steps by 1 to
        // avoid this.  We rely on |b| small and therefore no infinite recursion.
        ak -= 1;
diff --git a/include/boost/math/special_functions/hypergeometric_1F1.hpp b/include/boost/math/special_functions/hypergeometric_1F1.hpp
index 459c879490..a351a589e0 100644
--- a/include/boost/math/special_functions/hypergeometric_1F1.hpp
+++ b/include/boost/math/special_functions/hypergeometric_1F1.hpp
@@ -114,7 +114,7 @@ namespace boost { namespace math { namespace detail {
             // At higher than double precision we need to be further away from the crossover location to
             // get full converge, but it's not clear how much further - indeed at quad precision it's
             // basically impossible to ever get forwards iteration to work.  Backwards seems to work
-            // OK as long as a > 1 whatever the precision tbough.
+            // OK as long as a > 1 whatever the precision though.
             //
             int domain = hypergeometric_1F1_negative_b_recurrence_region(a, b, z);
             if ((domain < 0) && ((a > 1) || (boost::math::policies::digits<T, Policy>() <= 64)))
diff --git a/test/compile_test/interpolators_bezier_polynomial_incl_test.cpp b/test/compile_test/interpolators_bezier_polynomial_incl_test.cpp
index c02c5f5667..2eb04f20db 100644
--- a/test/compile_test/interpolators_bezier_polynomial_incl_test.cpp
+++ b/test/compile_test/interpolators_bezier_polynomial_incl_test.cpp
@@ -13,7 +13,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/compile_test/interpolators_bilinear_uniform.cpp b/test/compile_test/interpolators_bilinear_uniform.cpp
index c4e1778422..eca935df4f 100644
--- a/test/compile_test/interpolators_bilinear_uniform.cpp
+++ b/test/compile_test/interpolators_bilinear_uniform.cpp
@@ -13,7 +13,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/compile_test/interpolators_cardinal_trig_incl_test.cpp b/test/compile_test/interpolators_cardinal_trig_incl_test.cpp
index 3b32d4b074..937a19c7e3 100644
--- a/test/compile_test/interpolators_cardinal_trig_incl_test.cpp
+++ b/test/compile_test/interpolators_cardinal_trig_incl_test.cpp
@@ -15,7 +15,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/compile_test/interpolators_cubic_hermite_incl_test.cpp b/test/compile_test/interpolators_cubic_hermite_incl_test.cpp
index 50c27ce433..c6c36b48ed 100644
--- a/test/compile_test/interpolators_cubic_hermite_incl_test.cpp
+++ b/test/compile_test/interpolators_cubic_hermite_incl_test.cpp
@@ -13,7 +13,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/compile_test/interpolators_makima_incl_test.cpp b/test/compile_test/interpolators_makima_incl_test.cpp
index f4da34dc24..2f6e5f76be 100644
--- a/test/compile_test/interpolators_makima_incl_test.cpp
+++ b/test/compile_test/interpolators_makima_incl_test.cpp
@@ -13,7 +13,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/compile_test/interpolators_pchip_incl_test.cpp b/test/compile_test/interpolators_pchip_incl_test.cpp
index 4257e99940..942e8dbbe4 100644
--- a/test/compile_test/interpolators_pchip_incl_test.cpp
+++ b/test/compile_test/interpolators_pchip_incl_test.cpp
@@ -13,7 +13,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/compile_test/interpolators_quintic_hermite_incl_test.cpp b/test/compile_test/interpolators_quintic_hermite_incl_test.cpp
index df688287cb..fe1b57aedf 100644
--- a/test/compile_test/interpolators_quintic_hermite_incl_test.cpp
+++ b/test/compile_test/interpolators_quintic_hermite_incl_test.cpp
@@ -13,7 +13,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/compile_test/interpolators_septic_hermite_incl_test.cpp b/test/compile_test/interpolators_septic_hermite_incl_test.cpp
index 0ab8308306..936d24de8f 100644
--- a/test/compile_test/interpolators_septic_hermite_incl_test.cpp
+++ b/test/compile_test/interpolators_septic_hermite_incl_test.cpp
@@ -13,7 +13,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/compile_test/interpolators_vector_barycentric_rational_incl_test.cpp b/test/compile_test/interpolators_vector_barycentric_rational_incl_test.cpp
index 3d2cf3b66c..88f8d3e833 100644
--- a/test/compile_test/interpolators_vector_barycentric_rational_incl_test.cpp
+++ b/test/compile_test/interpolators_vector_barycentric_rational_incl_test.cpp
@@ -13,7 +13,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/compile_test/interpolators_whittaker_shannon_incl_test.cpp b/test/compile_test/interpolators_whittaker_shannon_incl_test.cpp
index f2540f36a0..8e2efcdfce 100644
--- a/test/compile_test/interpolators_whittaker_shannon_incl_test.cpp
+++ b/test/compile_test/interpolators_whittaker_shannon_incl_test.cpp
@@ -13,7 +13,7 @@
 //
 #include "test_compile_result.hpp"
 //
-// This test includes <vector> becasue many of the interpolators are not compatible with pointers/c-style arrays
+// This test includes <vector> because many of the interpolators are not compatible with pointers/c-style arrays
 //
 #include <vector>
 
diff --git a/test/cubic_roots_test.cpp b/test/cubic_roots_test.cpp
index 6b77f12cef..ab4b32049c 100644
--- a/test/cubic_roots_test.cpp
+++ b/test/cubic_roots_test.cpp
@@ -115,7 +115,7 @@ template <class Real> void test_zero_coefficients() {
 
 void test_ill_conditioned() {
     // An ill-conditioned root reported by SATovstun:
-    // "Exact" roots produced with a high-precision calcuation on Wolfram Alpha:
+    // "Exact" roots produced with a high-precision calculation on Wolfram Alpha:
     // NSolve[x^3 + 10000*x^2 + 200*x +1==0,x]
     std::array<double, 3> expected_roots{-9999.97999997,
                                          -0.010010015026300100757327057,