| foolish(adjective, simple, rough, careless, silly) |
| hackneyed(adjective, set, hard, simple, flat) |
| lacklustre |
| lessen(verb, stop, quiet, check, reduce) |
| moderate(verb, adjective, stop, check, reduce) |
| muddy(verb, adjective, reduce, diminish, lower) |
| pedestrian(adjective, set, simple, flat, excite) |
| quiet(verb, adjective, calm, quiet, check) |
| run-of-the-mill(adjective, set, flat, silly, common) |
| slothful(adjective, flat, low, sad, slow) |
| uneventful(adjective, simple, low, plain, ordinary) |
| wearying(adjective, boring, tedious, dreary, irritating) |
| banal(adjective, set, hard, weak, simple) |
| bovine(adjective, careless, stupid, impassive, unresponsive) |
| brainless(adjective, simple, slow, silly, foolish) |
| clouded(adjective, obscure, dark, gloomy, dim) |
| cold(adjective, calm, tough, severe, flat) |
| comatose(adjective, slow, careless, relaxed, heavy) |
| feeble-minded(adjective, simple, ability, slow, offensive) |
| half-witted(adjective, simple, ability, slow, offensive) |