| crazy(adjective, strange, mad, odd, insane) |
| balmy(adjective, crazy, mad, odd, insane) |
| loony(adjective, crazy, mad, odd, insane) |
| daft(adjective, crazy, mad, odd, insane) |
| batty(adjective, silly, foolish, crazy, mad) |
| nuts(adjective, silly, foolish, crazy, mad) |
| nutty(adjective, silly, foolish, crazy, mad) |
| mad(adjective, crazy, odd, insane) |
| bonkers(adjective, silly, foolish, crazy, mad) |
| dotty |
| screwy(adjective, silly, foolish, crazy, mad) |
| crackers |
| kooky(adjective, silly, foolish, crazy, mad) |
| loopy(adjective, crazy, mad, odd, insane) |
| wacky(adjective, crazy, mad, odd, insane) |
| cracked(adjective, silly, foolish, crazy, mad) |
| cuckoo(adjective, silly, foolish, crazy, mad) |
| insane(adjective, silly, foolish, crazy, mad) |
| loco(adjective, silly) |
| lunatic(adjective, crazy, mad, odd, insane) |