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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

One of the earliest readings I encountered was by the theorist David Halperin, who defined “queer” as “whatever is at odds with the normal, the legitimate, the dominant.”

From The Wall Street Journal • Apr. 2, 2026

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

From Salon • Feb. 24, 2026

She is likely to be joined by Emma Stone playing an alien -- or is she? -- in conspiracy theorist drama "Bugonia," and Norwegian actress Renate Reinsve in arthouse darling "Sentimental Value."

From Barron's • Jan. 20, 2026

He was a theorist, and this was a job that called for experimenters and engineers.

From "Outliers" by Malcolm Gladwell