theorist

noun

the·​o·​rist ˈthē-ə-rist 

ˈthir-ist

: a person who theorizes

Examples of theorist in a Sentence

Recent Examples on the Web

The histories of Habsburg Spain, ancien régime France, the Ottomans, Austria-Hungary, and the United Kingdom all illustrate the eighteenth-century political theorist Adam Ferguson’s insight that high debts ultimately induce decline. — Niall Ferguson, Foreign Affairs, 20 Oct. 2026

Richard Dawkins, the British evolutionary theorist and author of the groundbreaking best seller The Selfish Gene (1976), among many other books, appears to have gone a bit mad. — James Gleick, The New York Review of Books, 17 Oct. 2026

And mathematicians and theorists are tapping their new, powerful models to generate entire proofs for their research. — Peter Hall, Scientific American, 13 Oct. 2026

Researchers, such as the complexity theorist Stuart Kauffman, began to construct simple mathematical models of the networks of gene interactions. — Quanta Magazine, 9 Oct. 2026

Word History

First Known Use

1588, in the meaning defined above

Phrases Containing theorist

• conspiracy theorist

Kids Definition

theorist

noun

the·​o·​rist ˈthē-ə-rəst 

ˈthi(-ə)r-əst

: a person who theorizes