| dubitable(adjective, clear, open, certain, uncertain) |
| hairy(adjective, delicate, uncertain, unstable, doubtful) |
| obscure(adjective, uncertain, unreasonable, doubtful, vague) |
| suspicious(adjective, uncertain, nervous, doubtful, unsettled) |
| doubtable(adjective, uncertain, doubtful, unsettled, shaky) |
| in question(expression, adjective, idiom, clear, obscure) |
| indecisive(adjective, clear, open, delicate, certain) |
| puzzling(adjective, hard, open, fancy, rough) |
| shaky(adjective, delicate, uncertain, nervous, unstable) |
| unclear(adjective, clear, rough, certain, uncertain) |
| vague(adjective, clear, uncertain, definite, doubtful) |
| clouded(adjective, clear, certain, shaky, vague) |
| in doubt(expression, adjective, idiom, clear, certain) |
| incredulous |
| indefinite(adjective, uncertain, doubtful, vague, dubious) |
| indeterminate(adjective, clear, rough, certain, uncertain) |
| open to question(expression, adjective, idiom, uncertain, doubtful) |
| perplexing(adjective, hard, tough, fancy, rough) |
| ticklish(adjective, tough, difficult, delicate, uncertain) |
| touchy(adjective, delicate, uncertain, awkward, nervous) |