Synonyms of theorize

theorize

verb

as in to speculate

to think of or suggest ideas about what is possibly true or real; to form or suggest a theory about something

Many scientists have theorized about the possibility of life on other planets.

Related Words

• speculate
• hypothesize
• think
• postulate
• say
• believe
• presume
• suppose
• assume
• dream
• presuppose
• deduce
• infer
• accept
• swallow
• surmise
• gather
• conclude
• suspect
• guess
• premise
• credit
• hypothecate
• conjecture
• judge
• figure
• conceive
• imagine
• perceive
• suspicion
• insist
• contend
• assert
• take
• affirm
• reckon
• allege
• claim
• declare
• fancy
• maintain
• aver
• avow
• profess
• preconceive
• avouch

Dissimilar Words

• doubt
• question
• challenge
• discredit
• disagree (with)
• deny
• wonder (about)
• dispute
• controvert
• disbelieve
• discount
• reject
• distrust
• repudiate
• disavow
• disclaim
• refute
• disprove
• mistrust
• rebut
• disown
• belie
• confute

Example Sentences

Recent Examples of theorize

One feature worth further research, the authors noted, are the gaps or clumps in stellar streams that scientists theorize develop when small concentrations of dark matter pass through them. — Taylor Nicioli, CNN Money, 13 Aug. 2026

Nagiewicz also theorized that the sharks could have been dumped offshore by fishermen. — Charna Flam, PEOPLE, 13 Aug. 2026

Other experts have theorized the dramatic swings may have more to do with the state tests themselves than with student performance. — Cayla Bamberger, New York Daily News, 13 Aug. 2026

When looking at the statewide decline, state education leaders theorize it could be tied to the decline in the birth rate. — Lina Ruiz, Fort Worth Star-Telegram, 30 July 2026