| desolate(dull, obscure, dark, dim, black) |
| disheartened |
| duskish |
| faded(adjective, dull, dark, gloomy, faint) |
| flat(adjective, dull, dark, gloomy, faint) |
| funereal(dull, obscure, dark, dim, black) |
| fuzzy(adjective, dull, dark, gloomy, faint) |
| gray(adjective, dull, dark, gloomy, faint) |
| ill-defined(adjective, dull, dark, gloomy, faint) |
| invisible |
| joyless(dull, obscure, dark, dim, gray) |
| lackluster(adjective, dull, dark, gloomy, faint) |
| lightlessness |
| mat(adjective, dull, dark, gloomy, faint) |
| monotone(adjective, dull, dark, gloomy, faint) |
| monotonous(adjective, dull, dark, gloomy, faint) |
| muted(adjective, dull, dark, gloomy, faint) |
| mysterious |
| obfuscous(adjective, dull, dark, gloomy, dim) |
| obscured(adjective, dull, dark, gloomy, faint) |