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1. Lacking or marked by lack of intellectual acuity
    
2. In a state of mental numbness especially as resulting from shock
   "lay semiconscious, stupid by the blow"; "was stupid from fatigue";
   - dazed, stunned, stupefied
    
3. Lacking intelligence
   "a dull job with lazy and stupid co-workers";
   - unintelligent
    
4. Devoid of good sense or judgment
   - foolish, daft, dumb

1. A person who is not very bright
   "The economy, stupid!";
   - stupid person, stupe, dullard, dolt, pudding head, pudden-head [US], poor fish

Derived forms: stupids, stupider, stupidest

See also: absurd, anserine, asinine, birdbrained, blockheaded, boneheaded, brainless, cloddish, cockamamie [N. Amer], cockamamy [N. Amer], cockeyed, confused, dense, derisory, dim, doltish, dopey, dopy, dull, dumb, duncical, duncish, fatheaded, fatuous, fond, foolish, gaumless [Brit, archaic], goofy, gooselike, goosey, goosy, gormless [Brit], harebrained, headless, idiotic, ill-advised, ill-conceived, impolitic, imprudent, inadvisable, inane, insane, intelligence, jerky, laughable, loggerheaded, ludicrous, lumpen, lumpish, mad, mindless, misbegotten, misguided, nitwitted, nonsensical, obtuse, preposterous, rattlebrained, rattlepated, retarded, ridiculous, sappy, scatterbrained, scatty [Brit], senseless, silly, slow, soft-witted, thick, thickheaded, thick-skulled, thick-witted, unacademic, unadvisable, unadvised, unthinking, unwise, vacuous, wacky, weak, whacky, witless, wooden-headed, yokel-like, zany

Type of: simple, simpleton

Antonym: smart

Encyclopedia: Stupid, But Brave Stupid Stupid, Stupid Rat Tails Stupid, Stupid Man Stupid, Stoned & Dumb