| simple(adjective, ability, slow, plain, pure) |
| somber(adjective, upset, quiet, severe, sad) |
| unexciting(adjective, weak, plain, mild, stupid) |
| vague(adjective, weak, soft, gentle, obscure) |
| weak(adjective, hard, light, simple, soft) |
| backward(adjective, simple, ability, low, slow) |
| feeble(adjective, weak, soft, gentle, incompetence) |
| gray(noun, adjective, light, soft, poor) |
| hazy(adjective, quiet, weak, soft, gentle) |
| indolent(adjective, slow, careless, relaxed, indifferent) |
| insensible(adjective, quiet, flat, attitude, slow) |
| irksome(adjective, simple, excite, plain, stupid) |
| moronic(adjective, simple, slow, silly, foolish) |
| muffle(verb, calm, quiet, reduce, diminish) |
| muted(adjective, quiet, weak, simple, soft) |
| opaque(adjective, obscure, flat, slow, dark) |
| reduce(verb, stop, upset, quiet, check) |
| routine(noun, adjective, set, weak, simple) |
| sleepy(adjective, low, careless, relaxed, indifferent) |
| sober(adjective, characteristic, quiet, tough, severe) |