| debatable(uncertain, doubtful, unsure) |
| diffident(uncertain, nervous, doubtful, insecure, unsure) |
| disloyal(adjective, false, dishonest, deceitful, unreliable) |
| disputable(uncertain, doubtful, unsure) |
| distrustful(adjective, uncertain, nervous, doubtful, shaky) |
| doubtful(uncertain, nervous, insecure, unsure, unconvinced) |
| dubitable(uncertain, doubtful, unsure) |
| equivocal(uncertain, doubtful, unsure) |
| fair-weather(adjective, false, dishonest, deceitful, unreliable) |
| faithless(adjective, false, dishonest, deceitful, unreliable) |
| far-fetched(uncertain, doubtful, unsure) |
| fickle(adjective, false, dishonest, deceitful, unreliable) |
| fishy(uncertain, doubtful, unsure) |
| fluctuant(adjective, uncertain, nervous, doubtful, shaky) |
| hesitant(uncertain, nervous, doubtful, insecure, unsure) |
| iffy(adjective, uncertain, nervous, doubtful, hesitant) |
| improbable(uncertain, doubtful, unsure) |
| in a quandary(expression, adjective, idiom, uncertain, nervous) |
| indecisive(uncertain, nervous, doubtful, insecure, unsure) |
| indeterminate(adjective, uncertain, nervous, doubtful, shaky) |