Antonyms for "smart"
Looking for the opposite of "smart"? Common antonyms include dumb, foolish, unintelligent, thoughtless.
Direct antonyms
dumb, foolish, unintelligent, thoughtless
Antonyms grouped
dumbfoolishunintelligentthoughtless
Notes
Not every word has a true antonym. Where shades of meaning matter, the closest opposite is sometimes a "near-antonym" that fits the specific context you're writing in. Choose the one that matches your tone.