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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

But there have been no successful leads, despite authorities offering the largest-ever reward money in the region for tips about the well-known conspiracy theorist.

From BBC • Feb. 25, 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

Michael was a brilliant theorist and was working on policy matters for the Communist Party and needed a quiet and safe place to work on this full-time.

From "Long Walk to Freedom" by Nelson Mandela




Vocabulary lists containing theorist