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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

Take Roger Schank, an AI researcher and theorist who died in 2023.

From Salon • Feb. 24, 2026

The pioneering military theorist Carl von Clausewitz categorized relations in a country as military, societal and political, each having its distinct relationships with the other two.

From The Wall Street Journal • Feb. 1, 2026

Starting the year after Lawrence met him, his renown as a theorist would land him appointments first at the University of Chicago and then at Yale University’s Sloane Physics Laboratory as director.

From "Big Science" by Michael Hiltzik