diff --git a/.cspell.json b/.cspell.json
index 2e2fad7a..86d42f76 100644
--- a/.cspell.json
+++ b/.cspell.json
@@ -154,6 +154,7 @@
     "xyzrpy",
     "zcvf",
     "zenoh",
-    "zenohd"
+    "zenohd",
+    "coef"
   ]
 }