WordWeb Online

1. Affected with madness or insanity
   - brainsick, demented, disturbed, mad, sick, unbalanced, unhinged
    
2. Foolish; totally unsound
   "a crazy scheme"
   - half-baked, screwball, softheaded
    
3. Possessed by inordinate excitement
   "the crowd went crazy"; "was crazy to try his new bicycle"
    
4. Bizarre or fantastic
   "had a crazy dream"; "wore a crazy hat"
    
5. Intensely enthusiastic about or preoccupied with
   "crazy about cars and racing"
   - wild, dotty, gaga

1. Someone deranged and possibly dangerous
   - loony, looney, nutcase, weirdo, headcase

Derived forms: craziest, crazier, crazies

See also: craze, craziness, enthusiastic, excited, impractical, insane, strange, unusual

Type of: lunatic, madman, maniac

Encyclopedia: Crazy