| unintelligent(adjective, characteristic, weak, simple, ability) |
| vacuous(adjective, characteristic, stupid, thoughtless, stupidity) |
| preposterous(adjective, characteristic, wrong, wild, foolish) |
| ridiculous(adjective, characteristic, weak, simple, wild) |
| lunatic(adjective, characteristic, weak, simple, wild) |
| pointless(adjective, characteristic, simple, silly, foolish) |
| imbecilic(adjective, characteristic, weak, simple, silly) |
| boneheaded(adjective, characteristic, silly, stupid, impractical) |
| dumb(adjective, characteristic, foolish, crazy, insane) |
| insensate(adjective, characteristic, ability, stupid, planned) |
| irrational(adjective, characteristic, weak, simple, wrong) |
| meaningless(adjective, characteristic, simple, silly, stupid) |
| birdbrained(adjective, characteristic, silly, foolish, stupid) |
| unaware(adjective, characteristic, stupidity, foolishness) |
| daft(adjective, characteristic, weak, simple, wild) |
| loony(adjective, characteristic, weak, simple, wild) |
| unreasonable(adjective, characteristic, weak, simple, silly) |
| lamebrained(adjective, characteristic, stupid, stupidity, foolishness) |
| daffy(adjective, characteristic, weak, simple, silly) |
| inadequate(adjective, characteristic, stupidity, inadequacy, foolishness) |