- Definitions|2
- Thesaurus|2k
- Abbreviations|0
152 entries under adjective topic. ×
| groundless(reason, foolish, true, crazy) | |
| unsound(wrong, fake, false, counterfeit) | |
| baseless(false, foolish, true, crazy) | |
| unwarranted(right, reasonable, true, untrue) | |
| fallacious(wrong, fake, false, counterfeit) | |
| unjustifiable(unwarranted, defended, verbal attack) | |
| idle(false, true, hollow, unwarranted) | |
| invalid(wrong, fake, false, counterfeit) | |
| unjustified(unwarranted, untrue, flimsy, wanton) | |
| untenable(false, defended, verbal attack) | |
| faulty(wrong, fake, false, counterfeit) | |
| false(wrong, fake, counterfeit, unreasonable) | |
| gratuitous(unwarranted, untrue, flimsy, necessary) | |
| illogical(wrong, false, unreasonable, incorrect) | |
| unreasonable(foolish, irrational, unwarranted, illogical) | |
| unsustainable(defended, verbal attack) | |
| untrue(wrong, fake, false, counterfeit) | |
| indefensible(senseless, unwarranted, wanton, gratuitous) | |
| specious(wrong, fake, false, counterfeit) | |
| unsubstantiated |
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| APA | Smart Define. (2015). unfounded thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unfounded/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unfounded thesaurus" https://smartdefine.org/unfounded/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, unfounded thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unfounded/thesaurus/synonyms>. |
| MLA | Smart Define. "unfounded thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/unfounded/thesaurus/synonyms> |