- Definitions|2
- Thesaurus|72
- Abbreviations|0
| existing(adjective, existent) | |
| real(adjective, existent) | |
| existent(adjective, existent) | |
| abstract(theoretical, philosophical) | |
| essential(adjective, existent) | |
| extant(adjective, existent) | |
| metaphysics | |
| ontologically | |
| present(adjective, existent) | |
| subsistent(adjective, existent) | |
| subsisting(adjective, existent) | |
| cognitive | |
| abstruse(abstract, theoretical, philosophical) | |
| aerodynamic | |
| bodiless(abstract, theoretical, philosophical) | |
| conjectural(abstract, theoretical, philosophical) | |
| deep(abstract, theoretical, philosophical) | |
| difficult(abstract, theoretical, philosophical) | |
| discarnate(abstract, theoretical, philosophical) | |
| esoteric(abstract, theoretical, philosophical) |
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| APA | Smart Define. (2013). ontological thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/ontological/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "ontological thesaurus" https://smartdefine.org/ontological/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2013, ontological thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/ontological/thesaurus/synonyms>. |
| MLA | Smart Define. "ontological thesaurus" 17 June 2013. Web. 20 September 2026. <https://smartdefine.org/ontological/thesaurus/synonyms> |