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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
   - unintelligent

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: stupidest, stupider, stupids

See also: anserine, birdbrained, blockheaded, boneheaded, brainless, cloddish, confused, dense, dim, doltish, dopey, dopy, dull, dumb, duncical, duncish, fatheaded, foolish, gaumless [Brit], gooselike, goosey, goosy, gormless [Brit], headless, intelligence, jerky, loggerheaded, lumpen, lumpish, nitwitted, obtuse, retarded, senseless, slow, soft-witted, stupidity, stupidly, thick, thickheaded, thick-skulled, thick-witted, unthinking, weak, witless, wooden-headed, yokel-like

Type of: simple, simpleton

Antonym: smart

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