| 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) |
| cracked(adjective, informal, wild, silly, foolish) |
| crazed(adjective, wild, silly, foolish, stupid) |
| cuckoo(adjective, slang, silly, foolish, crazy) |
| demented(adjective, wrong, unusual, wild, strange) |
| dippy(adjective, knowledge, slang, ability, silly) |
| eccentric(adjective, characteristic, person, unusual, wild) |
| preposterous(adjective, weak, simple, wrong, knowledge) |
| idiotic(adjective, weak, simple, knowledge, ability) |
| imbecilic(adjective, weak, simple, knowledge, ability) |
| queer(adjective, characteristic, person, informal, unusual) |
| senseless(adjective, weak, simple, wrong, informal) |
| bats |
| buggy(adjective, slang, silly, foolish, crazy) |
| crackers(adjective, sane) |
| daffy(adjective, weak, simple, informal, silly) |