- Definitions|0
- Thesaurus|48
- Abbreviations|0
| undetermined | |
| unestablished | |
| unfixed | |
| unfounded | |
| ungrounded | |
| unproved | |
| unproven(adjective, false, untrue, illogical, deceptive) | |
| unreal(adjective, false, untrue, illogical, deceptive) | |
| unsettled | |
| unsupported | |
| unsustained | |
| untenable | |
| untested | |
| untried | |
| untruthful(adjective, false, untrue, illogical, deceptive) | |
| unverified | |
| unwarranted | |
| without foundation(expression, adjective, false, unreasonable, senseless) | |
| deceptive(adjective, false, untrue, illogical, unsubstantiated) | |
| erroneously |
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| APA | Smart Define. (2015). without basis thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/without_basis/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "without basis thesaurus" https://smartdefine.org/without_basis/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, without basis thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/without_basis/thesaurus/synonyms>. |
| MLA | Smart Define. "without basis thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/without_basis/thesaurus/synonyms> |