| dippy(adjective, slang, crazy, mad) |
| distraught(adjective, upset, wild, distressed, frantic) |
| disturbed(adjective, upset, strange, mad, odd) |
| foolish(adjective, simple, rough, wild, strange) |
| goofy(adjective, strange, silly, foolish, odd) |
| mentally ill(expression, adjective, idiom, insane, sane) |
| of unsound mind(expression, adjective, idiom, silly, mad) |
| psycho(noun, adjective, slang, silly, crazy) |
| sugar lump |
| certifiable |
| not all there(noun, expression, adjective, idiom, slang) |
| silly(adjective, wild, foolish, stupid, crazy) |
| balls(noun, slang, nut, taboo) |
| eccentric(adjective, wild, strange, silly, foolish) |
| gaga(adjective, informal, sane) |
| idiotic(adjective, wild, silly, foolish, stupid) |
| inane(adjective, simple, silly, foolish, unsound) |
| kookie |
| maniacal(adjective, silly, crazy, mad, insane) |
| out to lunch(expression, adjective, idiom, silly, mad) |