| bituminous(adjective, resin) |
| charcoal(adjective, pitch, black, murky, somber) |
| cloudy(adjective, dull, dark, gloomy, dim) |
| crepuscular(adjective, dull, dark, gloomy, dim) |
| darkling |
| dim(adjective, dull, dark, gloomy, black) |
| drab(adjective, dull, dark, gloomy, dim) |
| dun(adjective, dull, dark, gloomy, dim) |
| dusk(adjective, dull, dark, gloomy, dim) |
| faint(adjective, dull, dark, gloomy, dim) |
| foggy(adjective, dull, dark, gloomy, dim) |
| grey(adjective, heather, charcoal, starless) |
| grimy(adjective, dull, dark, gloomy, dim) |
| ill-lighted(adjective, dull, dark, gloomy, dim) |
| indistinct(adjective, dull, dark, gloomy, dim) |
| lightless(adjective, dull, dark, gloomy, dim) |
| lurid(adjective, dull, dark, gloomy, dim) |
| misty(adjective, dull, dark, gloomy, dim) |
| nebulous(adjective, dull, dark, gloomy, dim) |
| opaque(adjective, dull, dark, gloomy, dim) |