69 entries under questionable topic. ×
| unsubstantiated(adjective, unproven) | |
| fat chance(expression, adjective, shaky, unclear, unlikely) | |
| long shot(expression, adjective, shaky, unclear, risky) | |
| on thin ice(expression, adjective, idiom, open, delicate) | |
| sub judice(expression, idiom, inquiry, debatable) | |
| up for grabs(expression, adjective, idiom, uncertain, vague) | |
| far from certain(expression, idiom, debatable) | |
| not dependable(expression, unsupported) | |
| not reliable(expression, unsupported) |
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| APA | Smart Define. (2016). doubtful thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, doubtful thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>. |
| MLA | Smart Define. "doubtful thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms> |