diff --git a/codespell_lib/data/dictionary.txt b/codespell_lib/data/dictionary.txt
index 04aaef48c9..65e4aa3add 100644
--- a/codespell_lib/data/dictionary.txt
+++ b/codespell_lib/data/dictionary.txt
@@ -18233,6 +18233,8 @@ frowrad->forward
 frowrading->forwarding
 frowrads->forwards
 frozee->frozen
+frustrum->frustum
+frustrums->frustums, frusta,
 fschk->fsck
 FTBS->FTBFS
 fter->after