- Definitions|1
- Thesaurus|1.5k
- Abbreviations|0
63 entries under adjective topic. ×
| uncorroborated(questionable, unproven) | |
| unsupported(questionable, unproven) | |
| groundless | |
| unfounded | |
| unproven(untrue, risky, illogical, theoretical) | |
| baseless | |
| unconfirmed(questionable, unproven) | |
| shaky | |
| unverified(untrue, inaccurate, unconfirmed, uncorroborated) | |
| doubtful(questionable, unproven) | |
| dubious(questionable, unproven) | |
| theoretical | |
| uncertain(questionable, unproven) | |
| apocryphal(fake, questionable) | |
| debatable(questionable, unproven) | |
| fallacious(false, untrue, illogical, inaccurate) | |
| indefinite(questionable, unproven) | |
| suspect(questionable, unproven) | |
| suspicious(questionable, unproven) | |
| unjustified |
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| APA | Smart Define. (2016). unsubstantiated thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unsubstantiated/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "unsubstantiated thesaurus" https://smartdefine.org/unsubstantiated/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, unsubstantiated thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unsubstantiated/thesaurus/synonyms>. |
| MLA | Smart Define. "unsubstantiated thesaurus" 3 February 2016. Web. 27 September 2026. <https://smartdefine.org/unsubstantiated/thesaurus/synonyms> |