diff --git a/check_source/check_spelling_c_config.py b/check_source/check_spelling_c_config.py
index cf7e6f6b4f43be6283695716313985d12ccae442..b3e88665bc879071faed10903e4143c9dec0b0b1 100644
--- a/check_source/check_spelling_c_config.py
+++ b/check_source/check_spelling_c_config.py
@@ -37,26 +37,33 @@ dict_custom = {
     "desaturate",
     "destructors",
     "discretization",
+    "eachother",
     "editability",
     "enqueue", "enqueued", "enqueues",
     "equiangular",
     "finalizer",
+    "gimble",
     "initializer"
     "instantiation",
     "iterable",
     "merchantability",
+    "monospaced",
     "natively",
     "parallelization",
     "parallelized",
     "parameterization",
+    "performant",
+    "polygonization",
     "postprocessed",
     "precalculate",
     "prepend",
     "prepends",
     "probabilistically",
+    "rasterize",
     "rasterizing",
     "reachability",
     "recurse", "recurses",
+    "recursed",
     "redistributions",
     "reentrant",
     "registerable",
@@ -65,6 +72,7 @@ dict_custom = {
     "serializable",
     "subclass", "subclasses", "subclassing",
     "subdirectory",
+    "tertiarily",
     "unary",
     "unbuffered",
     "unclamped",
@@ -99,12 +107,14 @@ dict_custom = {
     "multi",
     "multithreaded", "multithreading",
     "namespace",
+    "ortho",
     "recalc",
+    "reparent",
     "runtime",
     "struct", "structs",
     "subdir",
     "tooltip",
-    "ortho",
+    "unparent",
 
     # general computer terms
     "XXX",