- Definitions|1
- Thesaurus|1.5k
- Abbreviations|0
20 entries under questionable topic. ×
| uncorroborated(adjective, unproven) | |
| unsupported(adjective, unproven) | |
| unconfirmed(adjective, unproven) | |
| doubtful(adjective, unproven) | |
| dubious(adjective, unproven) | |
| uncertain(adjective, unproven) | |
| apocryphal(adjective, fake) | |
| debatable(adjective, unproven) | |
| indefinite(adjective, unproven) | |
| suspect(adjective, unproven) | |
| suspicious(adjective, unproven) | |
| controversial(adjective, unproven) | |
| disputable(adjective, unproven) | |
| fishy(adjective, unproven) | |
| iffy(adjective, unproven) | |
| arguable(adjective, unproven) | |
| dubitable(adjective, unproven) | |
| hard to believe(adjective, unproven) | |
| open to doubt(adjective, unproven) | |
| open to question(adjective, unproven) |
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| APA | Smart Define. (2016). unsubstantiated thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unsubstantiated/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "unsubstantiated thesaurus" https://smartdefine.org/unsubstantiated/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, unsubstantiated thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unsubstantiated/thesaurus/synonyms>. |
| MLA | Smart Define. "unsubstantiated thesaurus" 3 February 2016. Web. 24 September 2026. <https://smartdefine.org/unsubstantiated/thesaurus/synonyms> |