| sooty(adjective, dull, soft, obscure, flat) |
| aphotic(adjective, dull, dark, gloomy) |
| atramentous(adjective, dull, dark, gloomy) |
| blackish(adjective, dull, dark, gloomy) |
| depressing(adjective, dark) |
| funereal(adjective, dull, dark, black) |
| joyless(adjective, dark, depressing) |
| lurid(adjective, dull, dark, gloomy) |
| misty(adjective, dull, dark, gloomy) |
| shaded(adjective, dull, dark, gloomy) |
| vague(adjective, dull, dark, gloomy) |
| becloud(verb, obscure, deepen, blacken) |
| become shaded(verb, expression, obscure, deepen) |
| bedim(verb, obscure, deepen, blacken) |
| blacken(verb, obscure, deepen) |
| cloud over(verb, expression, phrasal verb, obscure) |
| cloud up(verb, expression, phrasal verb, obscure) |
| cold(adjective, dull, soft, obscure, flat) |
| deepen(verb, obscure, blacken) |
| eclipse(verb, obscure, deepen, blacken) |