1
as in hypothesis
an idea that is the starting point for making a case or conducting an investigation
my supposition is that this grape variety, which flourishes in southern France, should do equally well here, given the similar climate
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2
as in guess
an opinion or judgment based on little or no evidence
it's pure supposition on your part that there's something illegal going on next door
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3
as in assumption
something taken as being true or factual and used as a starting point for a course of action or reasoning
worthless genetic research that was based on the erroneous supposition that acquired characteristics can be passed on to offspring
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Example Sentences
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Recent Examples of supposition
She’s bemused by suppositions about the advantages of her family legacy, which in reality boasts a centuries-deep ledger of addiction, estrangement, and untimely death.
—
Holden Seidlitz, New Yorker, 5 Aug. 2025
But that premise assumes two suppositions not in evidence.
—Andre Mouchard, Oc Register, 4 Aug. 2025
The great flaw in that theory is the supposition of logic in humans.
—Yeo Boon Ping, CNBC, 11 July 2025
That's a double-digit decline compared to the same three months of last year—itself no peach of a quarter for a car company with a stratospheric valuation based on the supposition of eternal sales growth.
—ArsTechnica, 2 July 2025
See All Example Sentences for supposition
Holden Seidlitz, New Yorker, 5 Aug. 2025
But that premise assumes two suppositions not in evidence.
—Andre Mouchard, Oc Register, 4 Aug. 2025
The great flaw in that theory is the supposition of logic in humans.
—Yeo Boon Ping, CNBC, 11 July 2025
That's a double-digit decline compared to the same three months of last year—itself no peach of a quarter for a car company with a stratospheric valuation based on the supposition of eternal sales growth.
—ArsTechnica, 2 July 2025
See All Example Sentences for supposition
Recent Examples of Synonyms for supposition
Noun
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Capturing a moment under specific conditions can help validate a hypothesis or guide mission changes.—
Suzanne Wright,
USA Today,
29 Oct. 2025
-
And so, in principle, there is always an alternative hypothesis that could explain the data.—
Big Think,
Big Think,
29 Oct. 2025
Noun
-
My best guess is the excitement about the company’s strong results and upbeat outlook subsides and a potential retest in the low 60′s is possible.—
Josh Brown,Sean Russo,
CNBC,
30 Oct. 2025
-
My guess is this is a small black bear, and blurring distorted the photo.—
Josh Honeycutt,
Outdoor Life,
30 Oct. 2025
Noun
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How does a proactive vision and assumption of positive intent and regard change your behavior and possibly influence other people’s behaviors around you?—
Colin Bedell,
Them.,
28 Oct. 2025
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Whatever the assumptions, the discourse has certainly elevated the profile of the modest series, which is the last project produced by Norman Lear before his death.—
Katie Campione,
Deadline,
28 Oct. 2025
Noun
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Professor of Science at Harvard University, recently made waves online for his theory that the interstellar comet has a 30% to 40% chance of being an artificial alien object sent to observe the solar system, Futurism reported.—
Jenna Prestininzi,
Freep.com,
29 Oct. 2025
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His theory is that while the opportunity in the digital space is booming, there is an industry shortage of skilled talent to capitalize.—
Jesse Whittock,
Deadline,
29 Oct. 2025
Noun
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Karl Popper said that science is about conjecture and refutation.—
David Wingrave,
Harpers Magazine,
24 Oct. 2025
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These can require more unraveling, and the further back one goes, the more conjecture there is.—
Literary Hub,
Literary Hub,
20 Oct. 2025
Noun
-
Based on Boss’ checks, the TJX thesis is still alive and well.—
Jeff Marks,
CNBC,
27 Oct. 2025
-
That’s the thesis of Returning to Myself, Carlile’s eighth solo album.—
Jonathan Bernstein,
Rolling Stone,
24 Oct. 2025
Noun
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The 2025 statewide special election is about a week away — and California voters will soon decide whether to approve or reject a statewide ballot proposition.—
Angela Rodriguez,
Sacbee.com,
28 Oct. 2025
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The moment is right to test a worthy proposition.—
STEPHEN WERTHEIM,
Foreign Affairs,
28 Oct. 2025
Cite this Entry
“Supposition.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supposition. Accessed 2 Nov. 2025.
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