| silly(adjective, weak, simple, wrong, ability) |
| foolish(adjective, dull, weak, simple, wrong) |
| stupid(adjective, dull, weak, simple, wrong) |
| witless(adjective, dull, weak, simple, ability) |
| mindless(adjective, dull, simple, wrong, ability) |
| dumb(adjective, dull, simple, slow, silly) |
| idiotic(adjective, dull, weak, simple, slow) |
| moronic(adjective, dull, weak, simple, slow) |
| unintelligent(adjective, dull, weak, simple, ability) |
| simple(adjective, dull, weak, slow, silly) |
| dull(adjective, simple, slow, silly, foolish) |
| asinine(adjective, weak, simple, silly, foolish) |
| senseless(adjective, dull, weak, simple, wrong) |
| half-witted(adjective, dull, weak, simple, slow) |
| inane(adjective, dull, simple, slow, silly) |
| imbecile(adjective, dull, simple, silly, foolish) |
| ignorant(adjective, dull, simple, slow, silly) |
| insensate(adjective, dull, simple, ability, slow) |
| thick(adjective, dull, simple, slow, silly) |
| obtuse(adjective, dull, simple, slow, silly) |