stupid is one of the 1000 most common headwords. stuff - stupid - subject Pronunciation IPA (key): /ˈst(j)uːpɪd/ SAMPA: /"st(j)u:pId/ Audio (US)(file) Adjective Positive stupid Comparative stupider Superlative stupidest Positive stupid Comparative more stupid Superlative most stupid If something or someone is stupid, it shows a lack of clear thought. Synonyms: silly, dumb and fool Antonyms: smart, clever and intelligent I'm so angry. That was a stupid mistake. Don't be stupid. Of course it's true.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads