theorize

verb

the·​o·​rize ˈthē-ə-ˌrīz How to pronounce theorize (audio)
ˈthir-ˌīz
theorized; theorizing
Synonyms of theorizenext

transitive verb

1
: to form a theory about
2
: to propose as a theory
theorization noun
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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Iranian scientists theorized that the other advanced civilizations in our galaxy may have already died out. Wyatt Williams, Harpers Magazine, 26 May 2026 Outside the context of collective trauma, psychologists theorize that personal hardships can germinate into do-good behaviors later on, especially if the individual was the recipient of help during their struggle. Pauline Bartolone, NPR, 23 May 2026 The vantage in this piece was earned in those rooms, not theorized from outside them. Vibhas Ratanjee, Forbes.com, 23 May 2026 Prosecutors have theorized that after Mackenzie sped up the car, Dominic and Davion could have tried to stop the crash by grabbing the wheel or gear shift. Caroline Blair, PEOPLE, 22 May 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 2 Jun. 2026.

Kids Definition

theorize

verb
the·​o·​rize ˈthē-ə-ˌrīz How to pronounce theorize (audio)
theorized; theorizing
: to form a theory : speculate
theorizer noun

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