Synonyms for crazy

Noun

1. crazy, loony, looney, weirdo, lunatic, madman, maniac

usage: someone deranged and possibly dangerous

Adjective

1. brainsick, crazy, demented, distracted, disturbed, mad, sick, unbalanced, unhinged, insane (vs. sane)

usage: affected with madness or insanity; "a man who had gone mad"

2. crazy, half-baked, screwball, softheaded, impractical (vs. practical)

usage: foolish; totally unsound; "an impractical solution"; "a crazy scheme"; "half-baked ideas"; "a screwball proposal without a prayer of working"

3. crazy, dotty, gaga, enamored, infatuated, in love, smitten, soft on(predicate), taken with(predicate), loving (vs. unloving)

usage: marked by foolish or unreasoning fondness; "she was crazy about him"; "gaga over the rock group's new album"; "he was infatuated with her"

4. crazy, excited (vs. unexcited)

usage: possessed by inordinate excitement; "the crowd went crazy"; "was crazy to try his new bicycle"

5. crazy, strange (vs. familiar), unusual

usage: bizarre or fantastic; "had a crazy dream"; "wore a crazy hat"

6. crazy, enthusiastic (vs. unenthusiastic)

usage: intensely enthusiastic about or preoccupied with; "crazy about cars and racing"