diff --git a/check_source/check_spelling_c_config.py b/check_source/check_spelling_c_config.py
index 38adae05c9b77145bfec55109ebf7d028c41f5a7..9dd4a9dcc6087654513c7cf7662c5c365d66cc2b 100644
--- a/check_source/check_spelling_c_config.py
+++ b/check_source/check_spelling_c_config.py
@@ -26,9 +26,13 @@ dict_custom = {
     "allocator",
     "atomicity",
     "boolean",
+    "confusticate", "confusticated",
     "decrement",
     "decrementing",
+    "dereference", "dereferenced",
     "desaturate",
+    "destructors",
+    "editability",
     "enqueue",
     "equiangular",
     "instantiation",
@@ -43,6 +47,7 @@ dict_custom = {
     "recurse",
     "subclass", "subclasses", "subclassing",
     "subdirectory",
+    "unary",
     "unregister",
     "unselected",
     "variadic",
@@ -122,6 +127,7 @@ dict_custom = {
     "freebsd",
     "irix",
     "kde",
+    "manpage",
     "mozilla",
     "netscape",
     "posix",
@@ -149,6 +155,7 @@ dict_custom = {
     "ngon", "ngons",
     "normals",
     "nurbs",
+    "octree",
     "quaternions",
     "radiosity",
     "reflectance",