| vague(adjective, dull, obscure, dark, gloomy) |
| blurred(adjective, dull, obscure, dark, heavy) |
| grimy(adjective, dull, soft, obscure, flat) |
| pitch-black(adjective, dull, dark, gloomy) |
| unlighted(adjective, dull, dark, gloomy) |
| atramentous(adjective, dull, obscure, dark, gloomy) |
| pitch-dark(adjective, dull, obscure, dark, gloomy) |
| rayless(adjective, dull, dark, gloomy) |
| Cimmerian(adjective, dull, dark, gloomy) |
| acheronian(sad, dark, depressing) |
| aphotic(adjective, dull, dark, gloomy) |
| ill-lighted(adjective, dull, dark, gloomy) |
| leaden(adjective, dull, soft, obscure, lead) |
| lurid(adjective, dull, dark, gloomy) |
| morose(sad, dark, depressing) |
| muddy(adjective, dull, soft, obscure, flat) |
| bleary(adjective, dull, obscure, dark, gloomy) |
| cold(adjective, dull, soft, obscure, flat) |
| depressive(dull, sad, dark, gloomy) |
| dispiriting(dull, sad, dark, gloomy) |