69 entries under questionable topic. ×
| uneasy(adjective, open, uncertain, anxious, awkward) | |
| dicey(noun, adjective, open, obscure, delicate) | |
| doubtable(adjective, open, obscure, uncertain, shaky) | |
| touch-and-go(adjective, shaky, unclear, unlikely) | |
| untrustworthy(adjective, weak, uncertain, nervous, sensitive) | |
| contingent(adjective, delicate, uncertain, unstable, shaky) | |
| hazardous(adjective, open, obscure, delicate, uncertain) | |
| inconclusive(adjective, clear, certain, uncertain, unclear) | |
| open to question(expression, adjective, idiom, uncertain, dubious) | |
| sneaky(adjective, informal, shaky, dubious, unclear) | |
| apocryphal(adjective, fake, uncertain, dubious) | |
| undependable(adjective, uncertain, nervous, vague, dubious) | |
| touchy(adjective, open, obscure, delicate, uncertain) | |
| unsupported(adjective, unsubstantiated, unconfirmed, uncorroborated) | |
| contentious(dubious, provocative, debatable, debated) | |
| delicate(adjective, weak, uncertain, unstable, unsettled) | |
| impugnable(adjective, open, obscure, delicate, uncertain) | |
| mootable(adjective, certain, uncertain, dubious, unsure) | |
| pending(adjective, open, uncertain, unsettled, vague) | |
| unconfirmed(adjective, uncertain, shaky, vague, dubious) |
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| APA | Smart Define. (2016). doubtful thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, doubtful thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>. |
| MLA | Smart Define. "doubtful thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms> |