| refutable |
| vague(adjective, uncertain) |
| viable(adjective, sound, reasonable, rational, conceivable) |
| ambiguous(adjective, uncertain, doubtful, unsettled, vague) |
| changeable(adjective, uncertain) |
| contested(adjective, certain) |
| defendable(adjective, sound, reasonable, rational, conceivable) |
| defensible(adjective, sound, reasonable, rational, justified) |
| feasible(adjective, conceivable, tenable) |
| iffy(uncertain, doubtful, dubious, tricky, questionable) |
| indefinite |
| insecure(adjective, uncertain) |
| maintainable(adjective, sound, reasonable, rational, justified) |
| mootable(adjective, certain, uncertain, doubtful, dubious) |
| shady(adjective, uncertain, doubtful, dubious, unsure) |
| supportable(adjective, conceivable, tenable) |
| tentative(adjective, uncertain) |
| unconvinced(adjective, uncertain, doubtful, unsure) |
| unlikely(adjective, uncertain, doubtful, unsure, debatable) |
| unreliable(adjective, uncertain, doubtful, dubious, unsure) |