| stupid(adjective, dull, weak, simple, mind) |
| foolish(adjective, dull, weak, simple, slight) |
| dull(adjective, simple, slow, silly, foolish) |
| fatuous(adjective, weak, simple, ability, silly) |
| silly(adjective, weak, simple, slight, ability) |
| slow(adjective, dull, simple, mind, think) |
| brainless(adjective, dull, weak, simple, ability) |
| doltish(adjective, dull, weak, simple, slow) |
| mindless(adjective, dull, simple, ability, silly) |
| senseless(adjective, dull, weak, simple, ability) |
| thick(adjective, dull, simple, slow, silly) |
| witless(adjective, dull, weak, simple, ability) |
| simple(adjective, dull, weak, slight, slow) |
| obtuse(adjective, dull, simple, slow, silly) |
| idiotic(adjective, dull, weak, simple, mind) |
| moronic(adjective, dull, weak, simple, mind) |
| dumb(adjective, dull, simple, slow, silly) |
| empty-headed(adjective, simple, slight, indifferent, foolish) |
| dense(adjective, dull, simple, slow, silly) |
| imbecilic(adjective, dull, weak, simple, slow) |