| nebulous(adjective, dull, obscure, dark, gloomy) |
| opaque(adjective, dull, soft, obscure, flat) |
| shady(adjective, dull, dark, gloomy, dim) |
| vague(adjective, dull, obscure, dark, gloomy) |
| drab(adjective, dull, soft, obscure, flat) |
| fuzzy(adjective, dull, obscure, dark, gloomy) |
| turbid(adjective, clear, obscure, dark, gloomy) |
| sunless(adjective, dull, dark, sorrow, gloomy) |
| unclear(adjective, dull, obscure, dark, gloomy) |
| cheerless(adjective, obscure, sorrow, gloomy, depress) |
| faint(adjective, dull, obscure, dark, gloomy) |
| blurred(adjective, dull, obscure, dark, gloomy) |
| dusk(adjective, dull, obscure, dark, gloomy) |
| funereal(adjective, sorrow, depress, sadness, emotion) |
| gray(noun, adjective, dull, obscure, dark) |
| sombre |
| sooty(adjective, dull, soft, obscure, flat) |
| caliginous(adjective, dull, light, obscure, dark) |
| darkened(adjective, dull, obscure, dark, gloomy) |
| dirty(adjective, obscure, dark, violent, wild) |