| crazy(adjective, characteristic, person, light, weak) |
| loony(adjective, light, weak, simple, wrong) |
| nutty(noun, adjective, light, weak, simple) |
| daft(adjective, weak, simple, wild, silly) |
| batty(noun, adjective, light, slang, wild) |
| foolish(adjective, weak, simple, wrong, knowledge) |
| absurd(adjective, light, weak, simple, wrong) |
| balmy(adjective, knowledge, slang, ability, wild) |
| insane(adjective, weak, simple, wrong, knowledge) |
| lunatic(adjective, weak, simple, knowledge, ability) |
| silly(adjective, light, weak, simple, wrong) |
| nuts(adjective, slang, wild, silly, foolish) |
| barmy(adjective, crazy, odd, insane) |
| nonsensical(adjective, weak, simple, wrong, knowledge) |
| screwy(adjective, light, slang, wild, silly) |
| bonkers(adjective, informal, silly, foolish, crazy) |
| kooky(adjective, weak, simple, wrong, unusual) |
| loopy(adjective, knowledge, ability, informal, foolish) |
| odd(adjective, characteristic, person, unusual, wild) |
| unbalanced(adjective, characteristic, person, silly, foolish) |