| lusterless(adjective, muddy, clouded) |
| matte(adjective, soft, obscure, flat, dark) |
| obfuscous(adjective, dull, obscure, dark, gloomy) |
| obscurity |
| pitch-black(adjective, dull, dark, gloomy, dim) |
| pitch-dark(adjective, dull, dark, gloomy, dim) |
| pitchy(adjective, dull, dark, gloomy, dim) |
| rayless(adjective, dull, dark, gloomy, dim) |
| shaded(adjective, dull, dark, gloomy, dim) |
| smoggy(adjective, turbid) |
| soft(adjective, obscure, flat, dark, cold) |
| solid(adjective, set, heavy, deep, stiff) |
| stygian(adjective, dull, dark, gloomy, dim) |
| uncomprehensible(adjective, incomprehensible) |
| undecipherable |
| unknowable(incoherent, unfathomable, incomprehensible, impenetrable, unintelligible) |
| unlighted(adjective, dull, dark, gloomy, dim) |
| vacuous |
| whitish(pale, white, frosty, cloudy, iced) |
| cold(adjective, soft, obscure, flat, dark) |