| doubtful(adjective, clear, open, certain, doubt) |
| debatable(adjective, open, uncertain, doubtful, shaky) |
| dubious(adjective, clear, open, certain, doubt) |
| questionable(adjective, clear, certain, uncertain, doubtful) |
| uncertain(adjective, clear, open, certain, doubt) |
| problematic(adjective, clear, certain, uncertain, doubtful) |
| suspicious(adjective, uncertain, doubtful, wary, unsure) |
| undecided(adjective, open, certain, doubt, uncertain) |
| unsure(adjective, clear, open, obscure, certain) |
| ambiguous(adjective, clear, open, obscure, certain) |
| disputable(adjective, uncertain, doubtful, unsure) |
| problematical(adjective, clear, certain, ambiguous) |
| vague(adjective, open, obscure, uncertain, doubtful) |
| arguable(adjective, uncertain, doubtful, unsure) |
| conjectural(adjective, doubtful, vague, unsure) |
| distrustful(wary, mistrustful) |
| iffy(adjective, clear, open, certain, uncertain) |
| in question(adjective, obscure, uncertain, anxious, doubtful) |
| indeterminate(adjective, clear, obscure, certain, uncertain) |
| leery(wary, mistrustful, distrustful) |