- Definitions|2
- Thesaurus|982
- Abbreviations|0
15 entries under unsubstantiality topic. ×
| groundless(adjective, reason, poor, foolish, true) | |
| ungrounded(adjective, poor, negative, untrue, vacant) | |
| unsubstantial | |
| without foundation(expression, adjective, idiom) | |
| air | |
| bubble | |
| dream | |
| having no foundation(expression, idiom) | |
| ignis fatuus(expression, idiom) | |
| imagination | |
| luminary | |
| mockery | |
| shadow | |
| thin air(expression, idiom) | |
| vapor |
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| APA | Smart Define. (2015). baseless thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/baseless/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "baseless thesaurus" https://smartdefine.org/baseless/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, baseless thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/baseless/thesaurus/synonyms>. |
| MLA | Smart Define. "baseless thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/baseless/thesaurus/synonyms> |