| controversial |
| delicate(adjective, uncertain, sensitive, unstable, doubtful) |
| dependent |
| fishy(adjective, uncertain, doubtful, shaky, dubious) |
| fluctuant(adjective, uncertain, nervous, irregular, doubtful) |
| fly-by-night(adjective, uncertain, nervous, doubtful, dubious) |
| improbable(adjective, uncertain, doubtful, shaky, likely) |
| in doubt(expression, adjective, idiom, clear, open) |
| in question(adjective, idiom, clear, certain) |
| inconclusive(adjective, clear, certain, uncertain, doubtful) |
| rocky(adjective, delicate, uncertain, sensitive, unstable) |
| shady(adjective, uncertain, doubtful, shaky, dubious) |
| slippery(adjective, delicate, uncertain, unstable, doubtful) |
| unassured(adjective, uncertain, nervous, doubtful, dubious) |
| unsound(adjective, delicate, uncertain, sensitive, risky) |
| variable(adjective, uncertain, irregular, doubtful, vague) |
| weak(adjective, uncertain, nervous, doubtful, insecure) |
| arguable(uncertain, doubtful, dubious, tricky, questionable) |
| at issue(adjective, idiom, clear, certain) |
| chanceful |