| problematical(adjective, clear, certain, uncertain, dubious) |
| vacillating(adjective, weak, uncertain, nervous, shy) |
| arguable(noun, adjective, certain, uncertain, unsettled) |
| controversial(noun, adjective, uncertain, hot, unsettled) |
| disreputable(adjective, dishonest, vague, dubious, unclear) |
| doubting(adjective, weak, uncertain, shy, hesitant) |
| insecure(adjective, delicate, uncertain, awkward, nervous) |
| precarious(adjective, uncertain, unstable, shaky, vague) |
| shaky(adjective, weak, delicate, uncertain, anxious) |
| undetermined(adjective, open, weak, rough, determined) |
| unpredictable(noun, adjective, uncertain, shy, vague) |
| unresolved(adjective, open, uncertain, unsettled, vague) |
| unsteady(adjective, weak, delicate, uncertain, unstable) |
| clouded(adjective, clear, certain, uncertain, vague) |
| enigmatic(adjective, uncertain, vague, dubious, mysterious) |
| far-fetched(adjective, hard, extraordinary, uncertain, fantastic) |
| hazy(adjective, uncertain, shaky, vague, unclear) |
| hesitating(adjective, weak, slow, uncertain, shy) |
| inconceivable(adjective, extraordinary, unreasonable, amazing, dubious) |
| irresolute(adjective, uncertain, unsettled, hesitant, unsure) |