theorize

verb

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

intransitive verb

: to form a theory : speculate

transitive verb

1
: to form a theory about
2
: to propose as a theory
theorization
ˌthē-ə-rə-ˈzā-shən How to pronounce theorize (audio)
ˌthir-ə-
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.
Fans have already theorized different ways the music could continue to be toured without Love’s active participation. — Chris Willman, Variety, 12 Oct. 2026 Lamm theorized that these efforts around DNA synthesis could even lead to developing crops or trees that grow faster. — Colleen McKown, CNBC, 10 Oct. 2026 Pollsters have also theorized that the covid pandemic played a role in making the 2020 polls particularly inaccurate. — Scott Clement, Washington Post, 8 Oct. 2026 Owens' post also linked to an Instagram video, which theorized the three friends killed Wells and tampered with his phone, according to the lawsuit. — ABC News, 6 Oct. 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

Rhymes for theorize

See All Rhymes for theorize

Browse Nearby Words

theorization
theorize
theorizer
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Cite this Entry

“Theorize.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/theorize. Accessed 14 Oct. 2026.

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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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