diff --git a/check_source/check_spelling_c_config.py b/check_source/check_spelling_c_config.py
index c5cc4c6f18b918fa7c3879eb6f2b23f63a58093e..f672bff771395ab3acec64fe254a007fe117d71a 100644
--- a/check_source/check_spelling_c_config.py
+++ b/check_source/check_spelling_c_config.py
@@ -82,12 +82,14 @@ dict_custom = {
     "denoising",
     "dereference",
     "dereferenced",
+    "dereferences",
     "dereferencing",
     "desaturate",
     "designator",
     "destructor",
     "destructors",
     "dialogs",
+    "digitizers",
     "dihedral",
     "discoverability",
     "discretization",
@@ -110,6 +112,7 @@ dict_custom = {
     "flushable",
     "formatter",
     "formatters",
+    "foveation",
     "glitchy",
     "haptics",
     "highlightable",
@@ -132,6 +135,10 @@ dict_custom = {
     "irradiance",
     "iteratively",
     "jitteryness",
+    "linearize",
+    "linearized",
+    "linearizes",
+    "linearizing",
     "linkable",
     "lockless",
     "losslessly",
@@ -170,6 +177,7 @@ dict_custom = {
     "pixelated",
     "pixelisation",
     "planarity",
+    "planarize",
     "polygonizer",
     "polytope",
     "postprocess",
@@ -199,8 +207,10 @@ dict_custom = {
     "probabilistically",
     "procedurally",
     "profiler",
+    "programmatically",
     "purgeability",
     "quadratically",
+    "queryable",
     "rasterizer",
     "rasterizes",
     "rasterizing",
@@ -226,6 +236,7 @@ dict_custom = {
     "reparameterization",
     "reparametization",
     "repurpose",
+    "respecialized",
     "retiming",
     "reusability",
     "saveable",
@@ -251,6 +262,7 @@ dict_custom = {
     "triangulator",
     "trilinear",
     "tunable",
+    "unadjusted",
     "unassign",
     "unbuffered",
     "unclamped",
@@ -261,8 +273,13 @@ dict_custom = {
     "undisplaced",
     "uneditable",
     "unflagged",
+    "unflip",
     "unfoldable",
     "unformatted",
+    "ungrabbed",
+    "ungrabbing",
+    "ungrouped",
+    "ungrouping",
     "unhandled",
     "unkeyframed",
     "unlink",