| grimy(adjective, dull, dark, gloomy, dim) |
| heavy(gloomy, gray, overcast) |
| hidden |
| ill-lighted(adjective, dull, dark, gloomy, dim) |
| impalpable(adjective, fake, false, unclear, imaginary) |
| indefinable |
| inky(adjective, dull, dark, gloomy, dim) |
| inscrutable |
| invisible |
| latent |
| lightless(adjective, dull, dark, gloomy, dim) |
| lurid(adjective, dull, dark, gloomy, dim) |
| nubilous(dark, gloomy, gray, misty, overcast) |
| obfuscous(adjective, dull, obscure, dark, gloomy) |
| pitch-black(adjective, dull, dark, gloomy, dim) |
| pitch-dark(adjective, dull, dark, gloomy, dim) |
| pitchy(adjective, dull, dark, gloomy, dim) |
| puzzling(unclear, indistinct, indistinguishable) |
| rayless(adjective, dull, dark, gloomy, dim) |
| shaded(adjective, dull, dark, gloomy, dim) |