theorize

verb

theorized; theorizing
Synonyms of theorizenext

transitive verb

1
: to form a theory about
2
: to propose as a theory
theorizer noun

Examples of theorize in a Sentence

Many scientists have theorized about the possibility of life on other planets.
Recent Examples on the Web
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In the centuries since, some scholars have theorized that powerful relatives and political rivals conspired to have Báthory imprisoned for their own benefit. — Caroline Blair, PEOPLE, 25 Sep. 2026 Yet, despite microquasars having been theorized to exist within our galaxy for around three decades, this one has avoided detection because it is blocked by a thick wall of interstellar gas and dust. — Robert Lea, Space.com, 24 Sep. 2026 Kwon theorizes that as the extra tax refunds from the One Big Beautiful Bill Act got spent, retail buyers pulled back. — Jim Edwards, Fortune, 23 Sep. 2026 Mitchell theorized that Marineland wanted to get rid of the whales quickly because the park sits on a tract of land that Animal Justice estimates is worth hundreds of millions of dollars. — Finnegan Belleau, Chicago Tribune, 23 Sep. 2026 See All Example Sentences for theorize

Word History

First Known Use

1644, in the meaning defined at transitive sense 1

Time Traveler
The first known use of theorize was in 1644

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Cite this Entry

“Theorize.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/theorize. Accessed 30 Sep. 2026.

Kids Definition

theorized; theorizing
: to form a theory : speculate
theorizer noun

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