| loopy |
| mad as a March hare(expression, adjective, idiom, wild, silly) |
| mad as a hatter(expression, adjective, idiom, wild, silly) |
| mentally strange(expression, adjective, silly, foolish, mad) |
| meshuga |
| nutty as fruitcake(expression, adjective, idiom, wild, silly) |
| off-the-wall |
| psycho(adjective, silly, foolish, mad, insane) |
| psychopathic(adjective, silly, foolish, stupid, crazy) |
| raving(adjective, silly, foolish, stupid, crazy) |
| round the bend(expression, adjective, idiom, wild, silly) |
| schizophrenic(adjective, silly, foolish, stupid, crazy) |
| screw loose(expression, adjective, wild, silly, foolish) |
| senseless(adjective, silly, foolish, stupid, crazy) |
| strange(silly, foolish, unwise) |
| unglued(adjective, wild, silly, foolish, mad) |
| unsettled(adjective, silly, foolish, stupid, crazy) |
| unstable(adjective, foolish, fantastic) |
| ape(adjective, silly, foolish, mad, insane) |
| aper(adjective, silly, mad, confused, insane) |