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Synonyms

ontological

American  
[on-tl-oj-i-kuhl] / ˌɒn tlˈɒdʒ ɪ kəl /
Sometimes ontologic,

adjective

  1. of or relating to ontology, the branch of metaphysics that studies the nature of existence or being as such; metaphysical.

    Some of the U.S. founders held an ontological belief in natural rights.


Other Word Forms

Etymology

Origin of ontological

First recorded in 1700–10; ontolog(y) ( def. ) + -ical ( def. )

Explanation

Things that have to do with the nature of being are ontological, like your ontological question about the Loch Ness Monster — do we have to have proof in order for something to exist? The study of being, is called ontology, so an ontological argument might investigate whether God — or people, for that matter — really exist. Are we real or just an imagined phenomenon? How do we know we aren't just characters in our creator's mind? These are heavy questions — philosophers including Aristotle, Parmenides, Descartes, Hume, Kant have all weighed in on the ontological question of “what can we be certain exists?”

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Vocabulary lists containing ontological

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

With spacetime, it's applied uncritically to a mathematical description of happenings -- turning a model into an ontological theory on the nature of being.

From Science Daily Nov. 2, 2025

Whatever Ramona wanted in the car, she’s experiencing ontological buyer’s remorse in the now.

From Salon Mar. 31, 2025

The premise, and what’s done with it, paint “Laid” into a moral and ontological corner, which it addresses temporarily by literally opening a door.

From Los Angeles Times Dec. 18, 2024

Berners-Lee wasn’t suggesting that ontological certitude would arise from the web mob’s ranking of websites that distributed the most accurate information.

From Slate Dec. 3, 2022

It is in relation to the speculative, not the practical, intellect, that things have ontological truth.

From Ontology or the Theory of Being by Coffey, Peter

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