someone deranged and possibly dangerous

[ Syn: loony , looney , nutcase , weirdo ]

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

[ Syn: brainsick , demented , disturbed , mad , sick , unbalanced , unhinged ]

foolish; totally unsound; a crazy scheme; half-baked ideas; a screwball proposal without a prayer of working

[ Syn: half-baked , screwball , softheaded ]

possessed by inordinate excitement; the crowd went crazy; was crazy to try his new bicycle'

bizarre or fantastic; had a crazy dream; wore a crazy hat'

intensely enthusiastic about or preoccupied with; crazy about cars and racing; he is potty about her

[ Syn: wild , dotty , gaga ]