diff --git a/docs/api.rst b/docs/api.rst
index ec3f3107306a..beae3b753b66 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -2151,7 +2151,7 @@ and XLIFF.
        The ``target`` and ``source`` are now arrays to properly handle plural
        strings.
 
-    Returns information about translation unit.
+    Returns information about the translation unit.
 
     :param id: Unit ID
     :type id: int
@@ -2166,7 +2166,7 @@ and XLIFF.
     :>json string note: translation unit note
     :>json string flags: translation unit flags
     :>json array labels: translation unit labels, available on source units
-    :>json int state: unit state, 0 - untranslated, 10 - needs editing, 20 - translated, 30 - approved, 100 - read only
+    :>json int state: unit state, 0 - untranslated, 10 - needs editing, 20 - translated, 30 - approved, 100 - read-only
     :>json boolean fuzzy: whether the unit is fuzzy or marked for review
     :>json boolean translated: whether the unit is translated
     :>json boolean approved: whether the translation is approved
diff --git a/weblate/auth/permissions.py b/weblate/auth/permissions.py
index efa7b924bf2c..56c16f6a3048 100644
--- a/weblate/auth/permissions.py
+++ b/weblate/auth/permissions.py
@@ -58,7 +58,7 @@ def wrap_perm(function):
 
 
 def check_global_permission(user: User, permission: str) -> bool:
-    """Check whether user has a global permission."""
+    """Check whether the user has a global permission."""
     if user.is_superuser:
         return True
     return permission in user.global_permissions
@@ -189,7 +189,7 @@ def check_can_edit(user: User, permission: str, obj: Model, is_vote=False):  # n
         ):
             return Denied(
                 gettext(
-                    "Contributing to this translation requires agreeing to its contributor agreement."
+                    "Contributing to this translation requires accepting its contributor license agreement."
                 )
             )
 
@@ -197,7 +197,7 @@ def check_can_edit(user: User, permission: str, obj: Model, is_vote=False):  # n
     if not check_permission(user, permission, obj):
         if not user.is_authenticated:
             # Signing in might help, but user still might need additional privileges
-            return Denied(gettext("Sign in to save the translation."))
+            return Denied(gettext("Sign in to save translations."))
         if permission == "unit.review":
             return Denied(
                 gettext("Insufficient privileges for approving translations.")
@@ -224,7 +224,7 @@ def check_can_edit(user: User, permission: str, obj: Model, is_vote=False):  # n
     ):
         return Denied(
             gettext(
-                "This translation only accepts suggestions, and these are approved by voting."
+                "This translation only accepts suggestions, in turn approved by voting."
             )
         )
 
@@ -243,8 +243,8 @@ def check_unit_review(user: User, permission: str, obj: Model, skip_enabled=Fals
         if isinstance(obj, Translation):
             if not obj.enable_review:
                 if obj.is_source:
-                    return Denied(gettext("Source string reviews are not enabled."))
-                return Denied(gettext("Translation reviews are not enabled."))
+                    return Denied(gettext("Source-string reviews are turned off."))
+                return Denied(gettext("Translation reviews are turned off."))
         else:
             if isinstance(obj, CategoryLanguage):
                 project = obj.category.project
@@ -256,7 +256,7 @@ def check_unit_review(user: User, permission: str, obj: Model, skip_enabled=Fals
             else:
                 project = obj
             if not project.source_review and not project.translation_review:
-                return Denied(gettext("Reviews are not enabled."))
+                return Denied(gettext("Reviewing is turned off."))
     return check_can_edit(user, permission, obj)
 
 
@@ -266,12 +266,12 @@ def check_edit_approved(user: User, permission: str, obj: Model):
     if isinstance(obj, Unit):
         unit = obj
         obj = unit.translation
-        # Read only check is unconditional as there is another one
+        # Read-only check is unconditional as there is another one
         # in PluralTextarea.render
         if unit.readonly:
             if not unit.source_unit.translated:
                 return Denied(gettext("The source string needs review."))
-            return Denied(gettext("The string is read only."))
+            return Denied(gettext("The string is read-only."))
         # Ignore approved state if review is not disabled. This might
         # happen after disabling them.
         if (
@@ -281,13 +281,13 @@ def check_edit_approved(user: User, permission: str, obj: Model):
         ):
             return Denied(
                 gettext(
-                    "Only reviewers can change approved strings, please add a suggestion if you think the string should be changed."
+                    "Only reviewers can change approved strings. Please add a suggestion if you think the string should be changed."
                 )
             )
     if isinstance(obj, Translation):
         component = obj.component
         if obj.is_readonly:
-            return Denied(gettext("The translation is read only."))
+            return Denied(gettext("The translation is read-only."))
     elif isinstance(obj, Component):
         component = obj
     if component is not None and component.is_glossary:
@@ -323,7 +323,7 @@ def check_unit_delete(user: User, permission: str, obj: Model):
         ):
             return Denied(
                 gettext(
-                    "Cannot remove terminology translation, remove source string instead."
+                    "Cannot remove terminology translation. Remove the source string instead."
                 )
             )
         obj = obj.translation
@@ -335,7 +335,7 @@ def check_unit_delete(user: User, permission: str, obj: Model):
 
     # Does file format support removing?
     if not component.file_format_cls.can_delete_unit:
-        return Denied(gettext("File format does not support this."))
+        return Denied(gettext("The file format does not support this."))
 
     if component.is_glossary:
         permission = "glossary.delete"
@@ -352,7 +352,7 @@ def check_unit_add(user: User, permission, translation):
 
     # Does file format support adding?
     if not component.file_format_cls.can_add_unit:
-        return Denied(gettext("File format does not support this."))
+        return Denied(gettext("The file format does not support this."))
 
     if component.is_glossary:
         permission = "glossary.add"
diff --git a/weblate/checks/flags.py b/weblate/checks/flags.py
index deb45e8618c2..f34232acff2b 100644
--- a/weblate/checks/flags.py
+++ b/weblate/checks/flags.py
@@ -46,7 +46,7 @@
 PLAIN_FLAGS["auto-java-messageformat"] = gettext_lazy(
     "Automatically detect Java MessageFormat"
 )
-PLAIN_FLAGS["read-only"] = gettext_lazy("Read only")
+PLAIN_FLAGS["read-only"] = gettext_lazy("Read-only")
 PLAIN_FLAGS["strict-same"] = gettext_lazy("Strict unchanged check")
 PLAIN_FLAGS["strict-format"] = gettext_lazy("Strict format string checks")
 PLAIN_FLAGS["forbidden"] = gettext_lazy("Forbidden translation")
diff --git a/weblate/templates/snippets/unit-readonly-badge.html b/weblate/templates/snippets/unit-readonly-badge.html
index 4d15683050bc..96296b0da5f8 100644
--- a/weblate/templates/snippets/unit-readonly-badge.html
+++ b/weblate/templates/snippets/unit-readonly-badge.html
@@ -9,6 +9,6 @@
     {% elif unit.is_source %}
         <span class="badge" title="{% trans "The source string cannot be edited." %}">{% trans "Source string" %}</span>
     {% else %}
-        <span class="badge">{% trans "Read only" %}</span>
+        <span class="badge">{% trans "Read-only" %}</span>
     {% endif %}
 {% endif %}
diff --git a/weblate/templates/translate.html b/weblate/templates/translate.html
index f0a5a5af3aad..1f172f990828 100644
--- a/weblate/templates/translate.html
+++ b/weblate/templates/translate.html
@@ -230,7 +230,7 @@ <h4 class="panel-title">
       {% elif project_locked %}
         title="{% trans "This translation is currently locked." %}"
       {% elif unit.readonly %}
-        title="{% trans "Read only" %}"
+        title="{% trans "Read-only" %}"
       {% endif %}
     >{% icon "suggest.svg" %} {% trans "Suggest" %}</button>
     {% endif %}
diff --git a/weblate/utils/state.py b/weblate/utils/state.py
index 450b5f72ab8a..0675652859d9 100644
--- a/weblate/utils/state.py
+++ b/weblate/utils/state.py
@@ -18,7 +18,7 @@ class StringState(IntegerChoices):
     STATE_FUZZY = 10, pgettext_lazy("String state", "Needs editing")
     STATE_TRANSLATED = 20, pgettext_lazy("String state", "Translated")
     STATE_APPROVED = 30, pgettext_lazy("String state", "Approved")
-    STATE_READONLY = 100, pgettext_lazy("String state", "Read only")
+    STATE_READONLY = 100, pgettext_lazy("String state", "Read-only")
 
 
 STATE_EMPTY = StringState.STATE_EMPTY