| crazy(adjective, wild, strange, silly, foolish) |
| nutty(adjective, wild, silly, foolish, stupid) |
| nuts(adjective, wild, silly, foolish, stupid) |
| insane(adjective, wild, silly, foolish, stupid) |
| batty(adjective, wild, silly, foolish, crazy) |
| daft(adjective, wild, silly, foolish, stupid) |
| deranged(adjective, wild, silly, foolish, stupid) |
| loony(adjective, wild, silly, foolish, stupid) |
| barmy(adjective, silly, foolish, insane) |
| cuckoo(adjective, silly, foolish, insane) |
| lunatic(adjective, wild, silly, foolish, crazy) |
| screwy(adjective, silly, foolish, insane) |
| bonkers(adjective, silly, foolish, insane) |
| demented(adjective, wild, silly, foolish, crazy) |
| foolish(adjective, wild, silly, stupid, crazy) |
| dippy(adjective, silly, foolish, insane) |
| touched(adjective, wild, silly, foolish, crazy) |
| unbalanced(adjective, silly, foolish, insane) |
| unhinged(adjective, silly, foolish, insane) |
| wacky(adjective, wild, silly, foolish, stupid) |