theorize

1 of 2

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

theorization

2 of 2

noun

the·​o·​ri·​za·​tion
variants also British theorisation
ˌthēərə̇ˈzāshən
plural -s
: an act or product of theorizing : formation of a theory : speculation

Examples of theorize in a Sentence

Verb Many scientists have theorized about the possibility of life on other planets.
Recent Examples on the Web
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Verb
Some researchers have theorized that these curious small galaxies could harbor black holes that are buried in thick shrouds of cosmic dust. Robert Lea, Space.com, 6 July 2026 Some researchers theorize that increasing brain creatine can protect neurons and improve cognition. Claire Bugos, Verywell Health, 3 July 2026 Following initial reports last month that the event would be held at Madison Square Garden, some theorized that the choice could be an elaborate smoke screen to divert attention from the couple’s real wedding plans. Jake Offenhartz, Fortune, 2 July 2026 Dodds and the late Donnie Duncan, then Oklahoma’s athletic director, often discussed television happenings in the sport and began theorizing a different path. Sam Khan Jr, New York Times, 1 July 2026 See All Example Sentences for theorize

Word History

First Known Use

Verb

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 7 Jul. 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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