| insane(adjective, silly, foolish, stupid, mad) |
| non compos mentis(expression, adjective, idiom, law, foolish) |
| mad(adjective, silly, foolish, stupid, crazy) |
| crazy(adjective, wrong, wild, strange, silly) |
| demented(adjective, silly, foolish, stupid, mad) |
| daft(adjective, silly, foolish, stupid, mad) |
| deranged(adjective, silly, foolish, stupid, mad) |
| loco(adjective, insane, sane, off, lunatic) |
| lunatic(adjective, silly, foolish, stupid, mad) |
| unbalanced(adjective, silly, foolish, mad, insane) |
| psychotic(adjective, silly, foolish, stupid, crazy) |
| touched(adjective, silly, foolish, stupid, mad) |
| unhinged(adjective, silly, foolish, stupid, mad) |
| batty(adjective, silly, foolish, stupid, mad) |
| bonkers(adjective, silly, foolish, mad, insane) |
| cracked(adjective, silly, foolish, stupid, mad) |
| maniacal(adjective, silly, foolish, stupid, mad) |
| mental(adjective, silly, foolish, stupid, mad) |
| nuts(adjective, silly, foolish, stupid, mad) |
| loony(adjective, silly, foolish, stupid, crazy) |