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
Some scholars – even those who have been advocates of strong measures to compel CO2 emissions reductions – suggest that today’s climate activism suffers from a legacy of anti-capitalist suppositions about who is most responsible for warming temperatures.
—
Dan Ikenson, Forbes, 4 Nov. 2024
Others were being medicated indefinitely on mere suppositions of mental illness.
—Christopher Damien, Los Angeles Times, 1 Nov. 2024
Many of the suppositions used to take Chung’s money were unreasonable.
—Andrew Wimer, Forbes, 18 Oct. 2024
Besides, the reflexive and facile supposition that media coverage drove this tragic event grinds against evidence that Americans have been increasingly tuning out the news, especially coverage of politics.
—Erik Wemple, Washington Post, 19 July 2024
See all Example Sentences for supposition 
Dan Ikenson, Forbes, 4 Nov. 2024
Others were being medicated indefinitely on mere suppositions of mental illness.
—Christopher Damien, Los Angeles Times, 1 Nov. 2024
Many of the suppositions used to take Chung’s money were unreasonable.
—Andrew Wimer, Forbes, 18 Oct. 2024
Besides, the reflexive and facile supposition that media coverage drove this tragic event grinds against evidence that Americans have been increasingly tuning out the news, especially coverage of politics.
—Erik Wemple, Washington Post, 19 July 2024
See all Example Sentences for supposition
Recent Examples of Synonyms for supposition
Noun
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Design and conduct experiments to test that hypothesis 3.—
Andrew Binns,
Forbes,
10 Feb. 2025
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The findings suggest a focus on reversing epigenetic markers may be the wrong approach for trying to reverse aging, and a competing hypothesis around the relationship between aging and DNA mutations may be a better approach.—
New Atlas,
New Atlas,
2 Feb. 2025
Noun
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And my guess is that the gap between men’s and women’s performances has been rapidly closing in the last decade with the development of a real professional sports league, and the possibility of endorsements on top of a (smallish) salary.—
Megan Schrader,
The Denver Post,
9 Feb. 2025
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Exactly when that shift would occur was anyone’s guess.—
Alexandra M. Lord,
CNN,
9 Feb. 2025
Noun
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Our analysis also makes some other conservative assumptions given the policy’s uncertainty.—
Emily Badger,
New York Times,
14 Feb. 2025
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And so is having people around you who can argue with you and question your assumptions.—
Mike Fleming Jr,
Deadline,
14 Feb. 2025
Noun
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But actually, Darwin’s theory is based on fitness to survive, which does not always mean big and strong.—
Jamie Lang,
Variety,
17 Feb. 2025
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For highly social animals like humans and other primates, the native opioid system may also play a role in social bonding, according to one influential theory.—
Moises Velasquez-Manoff Robert Petkoff Emma Kehlbeck Zak Mouton,
New York Times,
16 Feb. 2025
Noun
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Weissmann wrote that the woman saw who shot her; her account wasn’t based on conjecture.—
Meredith Colias-Pete,
Chicago Tribune,
11 Feb. 2025
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What happened to the Norsemen in Greenland is a matter of academic conjecture.—
Rob Crossan,
JSTOR Daily,
10 Feb. 2025
Noun
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The crux of our thesis in Bristol Myers is Cobenfy, the company’s new schizophrenia treatment that launched in the U.S. at the end of last year.—
Kevin Stankiewicz,
CNBC,
6 Feb. 2025
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The second part of Questlove’s thesis: fame did not sit easily on Sly Stone’s shoulders.—
Damon Wise,
Deadline,
2 Feb. 2025
Noun
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For Kendrick, a rich celebrity, that alignment is a fine proposition.—
Andre Gee,
Rolling Stone,
11 Feb. 2025
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Kramer’s curiosity about such questions and her game cast’s ability to key into her twee existentialism make for a fascinating if eventually quite trying proposition.—
Manuel Betancourt,
Variety,
8 Feb. 2025
Thesaurus Entries Near supposition
Cite this Entry
“Supposition.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supposition. Accessed 20 Feb. 2025.
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