| not all there(expression, adjective, idiom, off, lunatic) |
| cuckoo(adjective, silly, foolish, stupid, mad) |
| dotty(adjective, sane, off) |
| moonstruck(adjective, silly, foolish, stupid, mad) |
| nutty(adjective, silly, foolish, stupid, mad) |
| out to lunch(expression, adjective, idiom, wild, silly) |
| potty(adjective, wild, silly, foolish, mad) |
| screwy(adjective, silly, foolish, stupid, mad) |
| bananas(adjective, foolish, fantastic, sane, hacked) |
| barmy(adjective, silly, foolish, mad, insane) |
| certifiable |
| crackers(adjective, sane, off, dotty) |
| crazed(adjective, silly, foolish, stupid, mad) |
| distraught(adjective, wrong, frantic, sane, aper) |
| fruity(adjective, silly, foolish, mad, insane) |
| irrational(adjective, silly, foolish, stupid, crazy) |
| mentally ill(expression, adjective, sane, off, dotty) |
| off(adjective, sane, dotty) |
| unsound(adjective, foolish, fantastic, sane) |
| wacky(adjective, silly, foolish, mad, insane) |