| general(adjective, rough, vague, unknown, ambiguous) |
| inaccurate(adjective, vague, imprecise, unspecific, undefined) |
| inconclusive(adjective, clear, obscure, certain, uncertain) |
| loose(adjective, hard, rough, delicate, complex) |
| low(adjective, quiet, weak, soft, pale) |
| milky(adjective, semitransparent) |
| muffled(adjective, quiet, weak, soft, low) |
| open(adjective, uncertain, nervous, doubtful, unsettled) |
| shaky(adjective, uncertain, nervous, doubtful, dubious) |
| slight(adjective, weak, vague, pale, faded) |
| soft(adjective, quiet, weak, low, pale) |
| subdued(adjective, weak, pale, faded) |
| uncomprehensible(adjective, incomprehensible) |
| Delphic(nervous, insecure, unsure, unfathomable, impenetrable) |
| arcane(adjective, obscure, difficult, uncertain, doubtful) |
| diaphanous(adjective, semitransparent) |
| dubitable(adjective, clear, obscure, certain, uncertain) |
| iffy(adjective, clear, open, informal, certain) |
| inaudible(adjective, quiet, weak, soft, low) |
| intangible(adjective, clear, false, vague, deceitful) |