theorize

verb

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

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
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The website has reportedly seen an uptick in activity within the Cuaçao region during family holidays – prompting investigators to theorize that Bradley could be visiting the site to feel closer to her family, or her captors are monitoring the case. Julia Bonavita, FOXNews.com, 26 Oct. 2025 Before authorities confirmed the official cause of death, social media users began theorizing that it had been caused by a collision with the monorail. Mekishana Pierre, Entertainment Weekly, 22 Oct. 2025 Although more research is required, the team theorizes that in proper amounts, uric acid may actually have a surprising, similarly protective role in humans. Andrew Paul, Popular Science, 22 Oct. 2025 Viewers inclined to theorize their way to some baroque explanation are naturally going to disbelieve what’s right there in front of them. Scott Tobias, Vulture, 22 Oct. 2025 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 28 Oct. 2025.

Kids Definition

theorize

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

More from Merriam-Webster on theorize

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