| tricky(adjective, weak, delicate, false, uncertain) |
| undetermined(adjective, open, weak, rough, dark) |
| unreliable(adjective, delicate, false, uncertain, unstable) |
| unsettled(adjective, open, rough, delicate, uncertain) |
| veiled(adjective, obscure, unknown, clandestine, underground) |
| amorphous(adjective, vague, unclear, indistinct, indistinguishable) |
| amphibolous(adjective, equivocalness) |
| blurred(adjective, weak, obscure, dark, dim) |
| fuzzy(adjective, weak, rough, uncertain, doubtful) |
| hesitant(adjective, open, doubtful, vague, unsure) |
| iffy(adjective, clear, open, delicate, informal) |
| impenetrable(adjective, doubtful, vague, unclear, hidden) |
| irresolute(open, doubtful, vague, unsure, unresolved) |
| non-specific |
| open(adjective, uncertain, unstable, doubtful, unsettled) |
| roundabout(adjective, crooked, rambling, indirect, turning) |
| suspect(adjective, uncertain, dishonest, doubtful, vague) |
| undependable(adjective, vague, unknown, general, unclear) |
| unfathomable(adjective, obscure, dark, uncertain, doubtful) |
| unspecified(adjective, rough, vague, unknown, unclear) |