- Definitions|2
- Thesaurus|1.9k
- Abbreviations|0
116 entries under adjective topic. ×
| suppositional | |
| tenuous(poor, negative, implausible, vacant) | |
| uncorroborated | |
| unproved | |
| unproven | |
| unprovoked(reason, senseless, unwarranted, reckless) | |
| unsubstantial(error, unsubstantiality) | |
| unsupportable(senseless, unwarranted, wanton, gratuitous) | |
| without foundation(expression, idiom, unsubstantiality) | |
| faulty | |
| flawed | |
| foolish(unreasonable, illogical) | |
| foundationless(reason, false, unwarranted, untrue) | |
| implausible(poor, irrational, unconvincing, unreasoned) | |
| irrelevant(false, unreasonable, empty, senseless) | |
| light | |
| loose | |
| needless(useless, unwarranted, unnecessary, wanton) | |
| superstitious | |
| unattested |
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| APA | Smart Define. (2015). groundless thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/groundless/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "groundless thesaurus" https://smartdefine.org/groundless/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, groundless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/groundless/thesaurus/synonyms>. |
| MLA | Smart Define. "groundless thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/groundless/thesaurus/synonyms> |