| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | stupid, foolish |
| Synonyms: | asinine, backward, deranged, dim-witted, dull, fatuous, feeble-minded, idiotic, imbecilic, inane, ludicrous, moronic, simple, simple-minded, slow, thick, witless |
| Antonyms: | brainy, intelligent, smart |
| Main Entry: | ass |
| Part of Speech: | noun |
| Definition: | stupid person |
| Synonyms: | blockhead, dolt, donkey, dope, dunce, fool, idiot, imbecile, jackass, jerk*, nitwit, numbskull, simpleton*, twit |
| Main Entry: | backward |
| Part of Speech: | adjective |
| Definition: | slow in growth |
| Synonyms: | arrested, behind, checked, delayed, dense, dull, feeble-minded, imbecile, late, moronic, stupid, subnormal, underdeveloped, underprivileged, undeveloped |
| Antonyms: | developing, fast, intelligent, smart |
| Main Entry: | clod |
| Part of Speech: | noun |
| Definition: | stupid person |
| Synonyms: | blockhead, boor, chump, clown, dimwit, dolt, dope*, dumbbell, dummy, dunce, fool, imbecile, lame-brain, lout, oaf, simpleton |
| Main Entry: | cretin |
| Part of Speech: | noun |
| Definition: | obnoxious stupid person |
| Synonyms: | creep, fool, idiot, imbecile, loser, moron |
| Main Entry: | dimwit |
| Part of Speech: | noun |
| Definition: | a stupid person |
| Synonyms: | blockhead, bonehead, dolt, dullard, dunce, fool, idiot, ignoramus, imbecile, moron, numskull, simpleton, twit |
| Main Entry: | dullard |
| Part of Speech: | noun |
| Definition: | dolt |
| Synonyms: | airhead, blockhead, boob*, dimwit, dope*, dork, dumbbell, dunce, fool, idiot, imbecile, lamebrain, lunkhead, meathead, nitwit, simpleton, stupid person |
| Main Entry: | dunce |
| Part of Speech: | noun |
| Definition: | stupid person |
| Synonyms: | ass, birdbrain, blockhead, bonehead, buffoon, dimwit, dolt, donkey, dope, dork, drip*, dullard, dunderhead, fool, goof, goof ball, half-wit, idiot, ignoramus, imbecile, jerk, knucklehead, lame-brain, lightweight, moron, nerd*, nincompoop, ninny, nitwit, numskull, oaf, pinhead, scatterbrain, schnook, simpleton, twit |
| Antonyms: | brain, genius |
| Main Entry: | fatuous |
| Part of Speech: | adjective |
| Definition: | stupid |
| Synonyms: | absurd, asinine, birdbrained, boneheaded, brainless, dense, dull, foolish, idiotic, imbecile, inane, insensate, jerky, lamebrained, ludicrous, lunatic, mad, mindless, moronic, puerile, sappy, silly, simple, vacuous, witless |
| Antonyms: | aware, bright, intelligent, keen, sensible, smart |