Synonyms of hypothesize

hypothesize

verb

hī-ˈpä-thə-ˌsīz 

as in to say

to take as true or as a fact without actual proof

if we hypothesize that current population trends continue for the next 50 years

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Example Sentences

Recent Examples of hypothesize

Despite having a brain not much bigger than a chimp, researchers hypothesized that Homo naledi, as the species was named, deliberately buried its dead in the confines of the cave. — Katie Hunt, CNN Money, 24 June 2026

In the new study, the researchers hypothesize the bacterium may have jumped to humans from marmots, a kind of ground squirrel, remains of which were also found at the Siberian burial sites. — Jackie Flynn Mogensen, Scientific American, 17 June 2026

Many researchers therefore hypothesize that anoxygenic photosynthesis and its photosystem evolved first. — Quanta Magazine, 10 June 2026

The researchers hypothesized that some of those surfaces would be more catalytically active than others. — Chris Lee, ArsTechnica, 9 June 2026