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

This guy theorized that the debate had something to do with the cross-town rivalry between the city’s two high schools. — Martha Ross, Mercury News, 27 Aug. 2026

But doctoral student Jonathan Carcache theorizes that the lousewort is helping its neighbors as much as stealing from them. — ABC News, 25 Aug. 2026

At the Lowell Observatory in Arizona, he was dedicated to finding a ninth planet, which had long been theorized by scientists but never found. — Victoria Edel, PEOPLE, 24 Aug. 2026

After the usually chatty Grand Theft Auto 6 leaker went a full 24 hours without posting anything, many began to theorize Cyberleek’s spree was over, and they’d been shut down or caught after Take-Two’s relentless pursuit. — Paul Tassi, Forbes.com, 21 Aug. 2026