| unshaped(adjective, disorder, confusion, mess, muddle) |
| unstructured(adjective, disorder, confusion, mess, vague) |
| vaporous(dull, obscure, gloomy, dim, gray) |
| abstract |
| aphotic(adjective, dull, dark, gloomy, dim) |
| arcane |
| atramentous(adjective, dull, dark, gloomy, dim) |
| blackish(adjective, dull, dark, gloomy, dim) |
| caliginous(adjective, dull, dark, gloomy, dim) |
| deep |
| dingy(adjective, dull, dark, gloomy, dim) |
| dismal(adjective, dull, dark, gloomy, gray) |
| doubtful(weak, dubious, unclear, indistinct, indistinguishable) |
| drab(adjective, dull, dark, gloomy, dim) |
| dubious(weak, unclear, indistinct, indistinguishable) |
| dun(adjective, dull, dark, gloomy, dim) |
| elusive(hazy, indistinct, indeterminate) |
| enigmatic(unclear, indistinct, indistinguishable) |
| featureless |
| generalized(unclear, indistinct, indistinguishable) |