| screwball(adjective, silly, foolish, unwise) |
| sophomoric(adjective, stupid, impulsive, impractical, doomed) |
| daft(adjective, weak, simple, slow, wild) |
| flimsy(slight, detail, trivial, surface, shallow) |
| green |
| half-witted(dull, weak, simple, silly, foolish) |
| harebrained(adjective, weak, simple, foolish, stupid) |
| ignorant(adjective, simple, slight, slow, detail) |
| ill-advised(adjective, dull, weak, simple, silly) |
| immature |
| ineffective(incompetent, wasteful, unproductive) |
| insane(weak, simple, silly, foolish, fantastic) |
| lukewarm |
| premature(adjective, impulsive, rash, early) |
| raw |
| simpleminded(dull, unintelligent, witless) |
| slow(adjective, dull, simple, foolish, stupid) |
| underdone |
| weak(simple, silly, foolish, thoughtless, incompetent) |
| absurd(weak, simple, careless, foolish, stupid) |