Synonyms of postulate

postulate 1 of 2

noun

ˈpäs-chə-lət 

as in assumption

something taken as being true or factual and used as a starting point for a course of action or reasoning

one of the postulates that the true agnostic rejects is the assumption that it is even possible for us to know whether God exists

Synonyms & Similar Words

• assumption
• theory
• hypothesis
• premise
• belief
• given
• hypothetical
• presupposition
• presumption
• supposition
• if
• principle
• axiom
• proposition
• assertion
• thesis
• doctrine
• conclusion
• truism
• basis
• inference
• rule
• law
• tenet
• dogma
• gospel
• precept
• declaration
• foundation
• affirmation
• deduction
• standard
• dictum
• verity
• canon
• avouchment
• ground
• ipse dixit

postulate

2 of 2

verb

ˈpäs-chə-ˌlāt 

as in to say

to take as true or as a fact without actual proof

postulates that all people are born with certain rights that can never be taken away from them

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Example Sentences

Recent Examples of postulate

Noun

Euclid’s postulates for geometry; various schemes for standardizing arithmetic. — Quanta Magazine, 29 Apr. 2026

That postulate would justify racial quotas or preferences to remedy racial discrimination uncorroborated by credible evidence. — Bruce Fein, Baltimore Sun, 5 Mar. 2026

Verb

While most would chalk Phil's zeal up to just being an old-school kind of guy, some fans postulate that the Shah of Iran is actually a closeted homosexual himself, and there are a few examples to back this up. — Austin Perry Outkick, FOXNews.com, 10 June 2026

Now, building on their previous research, the Curtin and Sheffield Hallam University scientists postulate that the movement of the altar stone may have involved a combination of human and glacial transport. — Anne Doran, ARTnews.com, 5 June 2026

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