| fishy(adjective, great, honest, informal, extraordinary) |
| indecisive(adjective, clear, open, weak, delicate) |
| obscure(adjective, rough, dark, uncertain, unreasonable) |
| unclear(adjective, clear, open, obscure, rough) |
| vague(adjective, clear, open, obscure, rough) |
| shady(adjective, open, honest, unusual, strange) |
| improbable(adjective, extraordinary, uncertain, fantastic, dubious) |
| in doubt(expression, adjective, idiom, clear, certain) |
| incredulous(adjective, indecisive, skeptical, unbelieving) |
| unlikely(adjective, slight, uncertain, shaky, dubious) |
| unreliable(adjective, delicate, uncertain, nervous, unstable) |
| borderline(adjective, clear, open, delicate, certain) |
| incredible(adjective, great, extraordinary, unreasonable, fantastic) |
| indistinct(adjective, obscure, rough, uncertain, dim) |
| in question(expression, adjective, idiom, clear, obscure) |
| chancy(noun, adjective, clear, delicate, certain) |
| disbelieving(adjective, person, uncertain, hesitant, suspicious) |
| implausible(adjective, extraordinary, fantastic, amazing, dubious) |
| indeterminate(adjective, clear, obscure, rough, certain) |
| mistrustful(adjective, uncertain, anxious, nervous, worried) |