| disputable(adjective, open, certain, uncertain, doubtful) |
| dubious(adjective, clear, open, rough, delicate) |
| uncertain(adjective, clear, open, rough, delicate) |
| moot(adjective, open, certain, uncertain, doubtful) |
| problematical(adjective, clear, open, difficult, certain) |
| unsettled(adjective, open, rough, delicate, uncertain) |
| arguable(adjective, open, certain, uncertain, doubtful) |
| unsure(adjective, clear, rough, delicate, certain) |
| enigmatic(adjective, open, uncertain, doubtful, dubious) |
| iffy(adjective, clear, open, delicate, informal) |
| ambiguous(adjective, clear, open, rough, delicate) |
| baffling |
| open(adjective, open, uncertain, nervous, unstable) |
| equivocal(adjective, clear, rough, delicate, certain) |
| suspect(adjective, open, uncertain, unreasonable, doubtful) |
| undecided(adjective, uncertain, nervous, doubtful, unsettled) |
| fishy(adjective, uncertain, unreasonable, doubtful, unsettled) |
| borderline(adjective, clear, delicate, certain, uncertain) |
| chancy(adjective, clear, open, delicate, certain) |
| controversial(adjective, tough, uncertain, doubtful, unsettled) |