| soft(adjective, dull, quiet, weak, gentle) |
| drab(adjective, dull, soft, obscure, flat) |
| dusky(adjective, dull, cool, soft, obscure) |
| stifled(adjective, dull, quiet, weak, soft) |
| subdued(adjective, dull, quiet, weak, soft) |
| distant(adjective, dull, weak, soft, gentle) |
| gloomy(adjective, dull, flat, dark, dirty) |
| inaudible(adjective, dull, quiet, weak, soft) |
| tenebrous(adjective, dull, rough, dark, gloomy) |
| thick(adjective, dull, obscure, rough) |
| undetermined(adjective, obscure, rough, uncertain, doubtful) |
| crepuscular(adjective, dull, obscure, dark, gloomy) |
| dusk(noun, adjective, dull, dark, gloomy) |
| caliginous(adjective, dull, dark, gloomy) |
| dingy(adjective, dull, soft, obscure, flat) |
| dun(adjective, dull, soft, obscure, flat) |
| grimy(adjective, dull, soft, obscure, flat) |
| light(adjective, dull, weak, soft, gentle) |
| lightless(adjective, dull, dark, gloomy) |
| overcast(adjective, dull, soft, obscure, flat) |