| nonconformity(noun, doubt, uncertainty, dissent, reservation) |
| opacity(uncertainty, obscurity, vagueness, abstruseness, haziness) |
| outside chance(expression, doubtfulness, improbability, implausibility) |
| outside shot(expression, doubtfulness, improbability, implausibility) |
| paganism(noun, doubt, uncertainty, dissent, reservation) |
| peradventure |
| poor bet(expression, doubtfulness, improbability, implausibility) |
| poor lookout(expression, doubtfulness, improbability, implausibility) |
| poor possibility(expression, doubtfulness, improbability, implausibility) |
| poor prognosis(expression, doubtfulness, improbability, implausibility) |
| poor prospect(expression, doubtfulness, improbability, implausibility) |
| questionable |
| questioning(noun, doubt, uncertainty, dissent, reservation) |
| remote possibility(expression, doubtfulness, improbability, implausibility) |
| renunciation(noun, doubt, uncertainty, dissent, reservation) |
| repudiation(noun, doubt, uncertainty, dissent, reservation) |
| reservation(noun, doubt, uncertainty, dissent, distrust) |
| revisionism(noun, doubt, uncertainty, dissent, reservation) |
| schism(noun, doubt, uncertainty, dissent, reservation) |
| second thought |