| crazy(adjective, weak, character, simple, wrong) |
| nutty(noun, adjective, weak, simple, wrong) |
| daft(adjective, weak, simple, wild, silly) |
| loony(adjective, weak, simple, wrong, wild) |
| batty(noun, adjective, wild, silly, foolish) |
| eccentric(adjective, character, unusual, wild, strange) |
| nuts(noun, adjective, wild, silly, foolish) |
| barmy(adjective, silly, foolish, crazy) |
| wacky(adjective, weak, simple, wrong, unusual) |
| balmy(adjective, silly, foolish, crazy) |
| bonkers(adjective, silly, foolish, crazy) |
| lunatic(adjective, weak, simple, wild, silly) |
| buggy(adjective, silly, foolish, crazy) |
| cracked(adjective, wild, silly, foolish, crazy) |
| insane(adjective, weak, simple, wrong, wild) |
| deranged(adjective, wild, silly, foolish, crazy) |
| foolish(adjective, weak, simple, wrong, wild) |
| fruity(adjective, silly, foolish, insane) |
| round the bend(expression, adjective, idiom, silly, foolish) |
| screwy(adjective, silly, crazy, dubious) |