| pointless(adjective, silly, foolish, stupid, insignificant) |
| psychopathic(adjective, silly, foolish, stupid) |
| purposeless(adjective, silly, stupid, insignificant, ridiculous) |
| rabid(adjective, crazy, mad, odd, insane) |
| rash(adjective, crazy, mad, odd, insane) |
| raving(adjective, silly, foolish, stupid) |
| reasonless |
| reckless(adjective, crazy, mad, odd, insane) |
| schizo(adjective, silly, foolish, mad, insane) |
| schizophrenic(adjective, silly, foolish, stupid) |
| screw loose(expression, silly, foolish, mad, insane) |
| simple-minded(adjective, simple, slow, foolish, stupid) |
| stolid(adjective, simple, slow, stupid, sluggish) |
| strange(silly, foolish, odd, unwise, unconventional) |
| tetched |
| thick(adjective, simple, slow, stupid, sluggish) |
| thoughtless(silly, foolish, stupid, crazy, unwise) |
| tomfool(adjective, foolish) |
| twist |
| unreasonable(adjective, weak, simple, silly, foolish) |