| disputable(adjective, open, certain, uncertain, doubtful) |
| debatable(adjective, certain, uncertain, doubtful, dubious) |
| arguable(adjective, certain, uncertain, doubtful, dubious) |
| doubtful(adjective, certain, uncertain, dubious, unsure) |
| moot(adjective, certain, uncertain, doubtful, dubious) |
| problematic(adjective, certain, uncertain, doubtful, dubious) |
| problematical(adjective, certain, debatable) |
| questionable(adjective, certain, uncertain, doubtful, dubious) |
| uncertain(adjective, certain, doubtful, dubious, unsure) |
| chancy(uncertain, doubtful, dubious, unsure, questionable) |
| contested(adjective, certain) |
| dubious(adjective, uncertain, doubtful, unsure, questionable) |
| dubitable(uncertain, doubtful, unsure) |
| exceptionable(adjective, certain) |
| far-fetched(uncertain, doubtful, unsure) |
| fishy(uncertain, doubtful, unsure) |
| fly-by-night(uncertain, doubtful, unsure) |
| iffy(uncertain, doubtful, dubious, unsure, questionable) |
| improbable(uncertain, doubtful, unsure) |
| open(uncertain, doubtful, unsure) |