crazy

someone deranged and possibly dangerous

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

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

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"