Added 9 October 2026 muttonhead noun Categories: PeopleObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about muttonhead at Wordnik → Where our words come from → A stupid person; these words are used to express a low opinion of someone's intelligence. Origin From mutton + head. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: lunkheadblockheaddunderheadnumskullloggerheadknuckleheadboneheaddunceshitheadhammerheadmuttonmong Back to today's word