🔗 781 Synonyms & Antonyms for STUPID | Thesaurus.com Strongest matches dull dumb foolish futile ill-advised irrelevant laughable ludicrous naive senseless shortsighted simple trivial Strong matches dummy loser rash thick unintelligent Weak matches brainless dazed deficient dense dim doltish dopey gullible half-baked half-witted idiotic imbecilic inane indiscreet insensate meaningless mindless moronic nonsensical obtuse out to lunch pointless puerile simpleminded slow sluggish stolid stupefied thick-headed unthinking witless