| absurd(adjective, weak, simple, wrong, knowledge) |
| crazy(adjective, weak, simple, wrong, knowledge) |
| senseless(adjective, dull, weak, simple, wrong) |
| foolish(adjective, dull, weak, simple, wrong) |
| preposterous(adjective, weak, simple, wrong, knowledge) |
| stupid(adjective, dull, weak, simple, wrong) |
| idiotic(adjective, dull, weak, simple, knowledge) |
| irrational(adjective, weak, simple, severe, harsh) |
| nutty(adjective, weak, simple, wrong, wild) |
| daft(adjective, weak, simple, wild, silly) |
| loony(adjective, knowledge, ability, informal, foolish) |
| wild(adjective, crazy, odd, insane) |
| wacky(adjective, weak, simple, wrong, knowledge) |
| witless(adjective, foolish, crazy, odd) |
| zany(adjective, weak, simple, knowledge, ability) |
| crackpot(adjective, foolish, crazy, odd) |
| lunatic(adjective, knowledge, ability, crazy) |
| screwy(adjective, strange, stupid, crazy) |
| balmy(adjective, knowledge, slang, ability, crazy) |
| rash(adjective, crazy, odd, insane) |