- Definitions|2
- Thesaurus|2k
- Abbreviations|0
| fabulous | |
| factitious(adjective, fake, counterfeit, sham, phony) | |
| fictitious(adjective, wrong, fake, false, counterfeit) | |
| flawed(adjective, wrong, false, incorrect, untrue) | |
| light | |
| ostensible(adjective, fake, false, counterfeit, sham) | |
| seeming(adjective, fake, false, counterfeit, sham) | |
| senseless(false, foolish, unreasonable, irrational, illogical) | |
| speculative(adjective, unsubstantiated, unsupported, groundless) | |
| supposititious | |
| unconfirmed | |
| uncorroborated | |
| undue | |
| ungrounded | |
| unsupportable(adjective, senseless, unwarranted, wanton, gratuitous) | |
| vain | |
| absurd(adjective, wild, foolish, unreasonable, fabulous) | |
| causeless(adjective, senseless, unwarranted, wanton, gratuitous) | |
| contrary to fact(expression, adjective, idiom, wrong, fake) | |
| counterfeit(adjective, fake, sham, phony, bogus) |
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| APA | Smart Define. (2015). unfounded thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unfounded/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unfounded thesaurus" https://smartdefine.org/unfounded/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, unfounded thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unfounded/thesaurus/synonyms>. |
| MLA | Smart Define. "unfounded thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unfounded/thesaurus/synonyms> |