| crazy(adjective, light, weak, simple, wrong) |
| mad(adjective, weak, simple, wrong, wild) |
| insane(adjective, weak, simple, wrong, wild) |
| nuts(noun, adjective, slang, wild, strange) |
| batty(noun, adjective, light, slang, wild) |
| daft(adjective, weak, simple, wild, strange) |
| loony(adjective, light, weak, simple, wrong) |
| dotty(noun, adjective, weak, simple, strange) |
| balmy(adjective, appearance, taste, wild, silly) |
| goofy(adjective, light, silly, stupid, crazy) |
| screwy(adjective, light, slang, wild, silly) |
| kooky(adjective, weak, simple, wrong, unusual) |
| bonkers(adjective, slang, informal, crazy, mad) |
| foolish(adjective, weak, simple, wrong, wild) |
| wacky(adjective, light, weak, simple, wrong) |
| absurd(adjective, light, weak, simple, wrong) |
| barmy(adjective, silly, foolish, crazy, mad) |
| lunatic(adjective, weak, simple, wild, silly) |
| cracked(adjective, informal, wild, silly, foolish) |
| daffy(adjective, weak, simple, pleasant, slang) |