From Middle High German munt, from Old High German mund, from Proto-West Germanic *munþ, from Proto-Germanic *munþaz, from Proto-Indo-European *men-. Cognate with Low German Mund, Dutch mond, English mouth, Danish mund.

From an earlier Munt, from Middle High German and Old High German munt, from Proto-Germanic *mundō. The retention of /d/ in the combination /nd/ is a signature of northern High German dialects and only becomes widespread after a period in the Middle Ages where the southern reflex /nt/ is favoured in southern writings.