| gloomy(adjective, dull, dark, heavy, dim) |
| shapeless(adjective, disorder, obscure, confusion, mess) |
| indeterminate(adjective, character, obscure, vague, confused) |
| muddy(adjective, dark, gloomy, gray, unclear) |
| opaque(adjective, dull, obscure, dark, gloomy) |
| ambiguous(adjective, clear, obscure, certain, confused) |
| dusky(adjective, dull, obscure, dark, gloomy) |
| formless(adjective, disorder, confusion, mess, vague) |
| ill-defined(adjective, uncertain, vague, unclear, indistinct) |
| tenebrous(adjective, dull, rough, dark, gloomy) |
| dull(adjective, obscure, dark, heavy, gloomy) |
| nebular |
| nebulose |
| pale |
| sunless(adjective, dull, dark, gloomy, dim) |
| turbid(adjective, dark, gloomy, misty) |
| blurry(adjective, dull, obscure, dim, cloudy) |
| crepuscular(adjective, dull, obscure, dark, gloomy) |
| uncertain(adjective, clear, obscure, certain, vague) |
| cryptic |