diff --git a/AUTHORS b/AUTHORS
index 9060dd329..4b40f2beb 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -69,5 +69,5 @@ Wine project
 
 and many others, we possibly missed to mention here and are sorry for this.
 
-If you think your name is missing and should be menitioned here, please
+If you think your name is missing and should be mentioned here, please
 contact us for adding you.
diff --git a/mingw-w64-crt/crt/pseudo-reloc.c b/mingw-w64-crt/crt/pseudo-reloc.c
index 6210368ba..6e2a63b9c 100644
--- a/mingw-w64-crt/crt/pseudo-reloc.c
+++ b/mingw-w64-crt/crt/pseudo-reloc.c
@@ -10,8 +10,8 @@
    use, modify or distribute it freely.
 
    This code is distributed in the hope that it will be useful but
-   WITHOUT ANY WARRANTY. ALL WARRENTIES, EXPRESS OR IMPLIED ARE HEREBY
-   DISCLAMED. This includes but is not limited to warrenties of
+   WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
+   DISCLAMED. This includes but is not limited to warranties of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */
 
diff --git a/mingw-w64-crt/math/hypotl.c b/mingw-w64-crt/math/hypotl.c
index 9696f2b16..70a98dc08 100644
--- a/mingw-w64-crt/math/hypotl.c
+++ b/mingw-w64-crt/math/hypotl.c
@@ -38,7 +38,7 @@ hypotl (long double x, long double y)
     {
       /* Annex F.9.4.3, hypot returns +infinity if
          either component is an infinity, even when the
-         other compoent is NaN.  */
+         other component is NaN.  */
       return (isinf(xx) || isinf(yy)) ? INFINITY : NAN;
     }
 
diff --git a/mingw-w64-crt/misc/fesetenv.c b/mingw-w64-crt/misc/fesetenv.c
index 9b44fab64..a3279bddd 100644
--- a/mingw-w64-crt/misc/fesetenv.c
+++ b/mingw-w64-crt/misc/fesetenv.c
@@ -52,7 +52,7 @@ int fesetenv (const fenv_t * envp)
   else if (envp == FE_PC53_ENV)
    /*
     * MS _fpreset() does same *except* it sets control word
-    * to 0x27f (53-bit precison).
+    * to 0x27f (53-bit precision).
     * We force calling _fpreset in msvcrt.dll
     */
 
diff --git a/mingw-w64-crt/misc/feupdateenv.c b/mingw-w64-crt/misc/feupdateenv.c
index 4a89d0b2c..aea95902b 100644
--- a/mingw-w64-crt/misc/feupdateenv.c
+++ b/mingw-w64-crt/misc/feupdateenv.c
@@ -19,7 +19,7 @@ int feupdateenv (const fenv_t * envp)
 {
   unsigned int _fexcept = fetestexcept (FE_ALL_EXCEPT); /*save excepts */
   fesetenv (envp); /* install the env  */
-  feraiseexcept (_fexcept); /* raise the execept */
+  feraiseexcept (_fexcept); /* raise the except */
   return 0;
 }
 
diff --git a/mingw-w64-headers/crt/math.h b/mingw-w64-headers/crt/math.h
index 25baeb045..3754dc64e 100644
--- a/mingw-w64-headers/crt/math.h
+++ b/mingw-w64-headers/crt/math.h
@@ -263,7 +263,7 @@ extern "C" {
   };
 #endif
 
-  double __cdecl _cabs(struct _complex _ComplexA); /* Overriden to use our cabs.  */
+  double __cdecl _cabs(struct _complex _ComplexA); /* Overridden to use our cabs.  */
   double __cdecl _hypot(double _X,double _Y);
   _CRTIMP double __cdecl _j0(double _X);
   _CRTIMP double __cdecl _j1(double _X);
diff --git a/mingw-w64-headers/crt/pthread_signal.h b/mingw-w64-headers/crt/pthread_signal.h
index c6a2ae1b0..8c1366679 100644
--- a/mingw-w64-headers/crt/pthread_signal.h
+++ b/mingw-w64-headers/crt/pthread_signal.h
@@ -1,3 +1,3 @@
-/* Dummy header, which gets overriden, if winpthread library gets installed.  */
+/* Dummy header, which gets overridden, if winpthread library gets installed.  */
 
 
diff --git a/mingw-w64-headers/crt/pthread_time.h b/mingw-w64-headers/crt/pthread_time.h
index aa2b24e85..e740b43e4 100644
--- a/mingw-w64-headers/crt/pthread_time.h
+++ b/mingw-w64-headers/crt/pthread_time.h
@@ -1 +1 @@
-/* Dummy header, which gets overriden, if winpthread library gets installed.  */
+/* Dummy header, which gets overridden, if winpthread library gets installed.  */
diff --git a/mingw-w64-headers/crt/pthread_unistd.h b/mingw-w64-headers/crt/pthread_unistd.h
index c6a2ae1b0..8c1366679 100644
--- a/mingw-w64-headers/crt/pthread_unistd.h
+++ b/mingw-w64-headers/crt/pthread_unistd.h
@@ -1,3 +1,3 @@
-/* Dummy header, which gets overriden, if winpthread library gets installed.  */
+/* Dummy header, which gets overridden, if winpthread library gets installed.  */