| problematical(adjective, clear, certain, uncertain, doubtful) |
| ambiguous(adjective, clear, open, delicate, certain) |
| capricious(adjective, uncertain, irregular, dubious, unpredictable) |
| conditional(adjective, uncertain, dependent) |
| dodgy(adjective, dubious, risky, dangerous, hazardous) |
| erratic(adjective, uncertain, irregular, doubtful, vague) |
| indeterminate(adjective, clear, certain, uncertain, nervous) |
| speculative(adjective, delicate, uncertain, sensitive, doubtful) |
| tricky(noun, adjective, delicate, uncertain, sensitive) |
| undecided(adjective, open, uncertain, definite, doubtful) |
| unsettled(adjective, open, delicate, uncertain, unstable) |
| unsteady(adjective, delicate, uncertain, unstable, doubtful) |
| whimsical(adjective, uncertain, irregular, dubious, risky) |
| unstable(adjective, delicate, uncertain, nervous, irregular) |
| difficult(noun, adjective, tricky, risky, hazardous) |
| equivocal(adjective, clear, open, delicate, certain) |
| indecisive(adjective, clear, open, delicate, certain) |
| perilous(adjective, delicate, uncertain, sensitive, unstable) |
| suspicious(adjective, uncertain, nervous, doubtful, unsettled) |
| untrustworthy(adjective, uncertain, nervous, doubtful, dubious) |