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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Researchers have also theorized that Duchenne smiles may indicate an intensity of emotion rather than positivity. Heather Jones, Verywell Health, 27 June 2025 The scientists behind the study theorized the change was likely part of an attempt in the brain to restructure thinking to better support fatherhood. Jack Beresford, MSNBC Newsweek, 26 June 2025 Prosecutors in the first case wrongly theorized her body had been dumped in a mountainous region near the Morphew family home. Katie Langford, Denver Post, 20 June 2025 But its presence is felt through Williams’ theme, which some music scholars have theorized evoke the shark’s heartbeat. Jared Bahir Browsh, The Conversation, 18 June 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 1 Jul. 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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