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Definitions

theorist

[thee-er-ist, theer-] / ˈθi ər ɪst, ˈθɪər- /
NOUN
philosopher
Synonyms




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.

It’s the classic mindset of the conspiracy theorist: The absence of proof of the conspiracy is simply proof of how deep the conspiracy goes!

From MarketWatch • Apr. 3, 2026

Local media described Freeman as a conspiracy theorist and member of the so-called "sovereign citizen" movement, which falsely believes it is not subject to the law.

From Barron's • Mar. 30, 2026

If war is the continuation of politics by other means, as the military theorist Carl von Clausewitz famously claimed, then a war’s success must be judged by the achievement of its political goals.

From The Wall Street Journal • Mar. 17, 2026

Henry Giroux, social theorist and author of “Assassins of Memory,” a book that examines the politics of erasure, was not surprised.

From Salon • Mar. 2, 2026

Somewhere between Bragg the theorist and Perutz the experimentalist was Francis, who occasionally did experiments but more often was immersed in the theories for solving protein structures.

From "Double Helix" by James D. Watson