| lax(adjective, characteristic, clear, soft, rough) |
| dubious(adjective, clear, open, rough, uncertain) |
| enigmatic(adjective, clear, obscure, rough, difficult) |
| formless(adjective, disorder, obscure, confusion, mess) |
| inexplicit(adjective, clear, obscure, certain, uncertain) |
| mysterious(adjective, obscure, uncertain, doubtful, dubious) |
| pale(adjective, dull, weak, soft, gentle) |
| unsure(adjective, clear, open, obscure, rough) |
| clouded(adjective, dull, obscure, dark, gloomy) |
| cryptic(adjective, obscure, difficult, uncertain, doubtful) |
| imperceptible(adjective, dull, hard, weak, soft) |
| unfixed(adjective, characteristic, uncertain, doubtful, hesitant) |
| unspecified(adjective, clear, rough, uncertain, definite) |
| filmy(adjective, dim, cloudy, murky, hazy) |
| indistinguishable(adjective, weak, slight, obscure, fine) |
| non-specific |
| puzzling(adjective, clear, obscure, uncertain, definite) |
| tenebrous(adjective, dull, clear, obscure, rough) |
| unresolved(adjective, open, certain, uncertain, doubtful) |
| wavering(adjective, open, nervous, doubtful, unsettled) |