| eccentric(adjective, wild, strange, silly, foolish) |
| harebrained(adjective, weak, simple, knowledge, ability) |
| reckless(adjective, silly, stupid, crazy) |
| unsound(adjective, wrong, silly, foolish, stupid) |
| daffy(adjective, weak, simple, silly, foolish) |
| screwy(adjective, light, wild, silly, foolish) |
| witless(adjective, foolish, crazy, odd) |
| batty(adjective, light, wild, silly, foolish) |
| cockamamie(adjective, weak, simple, wrong, silly) |
| fantastical(adjective, happy, perfect, marvelous, crazy) |
| kooky(adjective, weak, simple, wrong, wild) |
| loopy(adjective, knowledge, ability, informal, foolish) |
| nuts(adjective, simple, wild, strange, silly) |
| rash(adjective, crazy, odd, insane) |
| barmy(adjective, crazy, odd, insane) |
| crazed(adjective, wild, silly, foolish, stupid) |
| delirious(adjective, crazy, odd, insane) |
| flaky(adjective, light, wrong, happy, informal) |
| unusual(adjective, silly, foolish, stupid, crazy) |
| distracted(adjective, crazy, odd, insane) |