| non compos mentis(expression, adjective, idiom, law, unstable) |
| crackers(adjective, stupid, crazy) |
| goofy(adjective, strange, silly, foolish, odd) |
| of unsound mind(expression, adjective, idiom, silly, mad) |
| bats |
| buggy(adjective, slang, silly, foolish, crazy) |
| imbecilic(adjective, weak, simple, slow, silly) |
| moronic(adjective, weak, simple, slow, silly) |
| psychotic(adjective, silly, foolish, stupid, crazy) |
| witless(adjective, weak, simple, slow, silly) |
| gaga(adjective, informal, insane, sane, distraught) |
| irrational(adjective, weak, simple, wild, silly) |
| potty(adjective, wild, silly, foolish, stupid) |
| brainless(adjective, weak, simple, slow, silly) |
| certifiable |
| dippy(adjective, weak, simple, silly, foolish) |
| distraught(adjective, crazy, mad, odd, confused) |
| fruity(adjective, slang, silly, foolish, mad) |
| ludicrous(adjective, weak, simple, wild, silly) |
| moonstruck(adjective, silly, foolish, stupid, mad) |