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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Antonyms & Near Antonyms
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
Recent Examples of Synonyms for supposition
Noun
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The story of the Platonic representation hypothesis paper began in early 2023, a turbulent time for AI researchers.—
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Furthermore, Jie said that laboratory simulations support the hypothesis that the majority of the surface regolith inside Shackleton Crater is conducive to the stable preservation of water ice.—
Noun
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But these are just guesses, not official explanations.—
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But my guess is that the truth will be lost on the average reader.—
Noun
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As the video spread, viewers flooded the comments with advice, concern and assumptions about her daily life.—
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Similar to fellow Arsenal summer signing Eberechi Eze — another keen chess player — the assumption would be that the skills taken from the board game have helped Zubimendi be a step ahead in enticing and then bypassing opposition players.—
Noun
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Those are, indeed, pat, credible theories and predictions.—
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But now, in the planet’s capital city of Apperax, a murder is committed with no suspects, forensics or theories.—
Noun
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There are no corrections of consequence in this new world, so a simple short-selling conjecture is too good to check out.—
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The Year in Computer Science Explore the year’s most surprising computational revelations, including a new fundamental relationship between time and space, an undergraduate who overthrew a 40-year-old conjecture, and the unexpectedly effortless triggers that can turn AI evil.—
Noun
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The designer wrote his master’s thesis on wearables, foreseeing how smart clothing and other technologies could become part of daily life even before wireless technologies like Wifi and Bluetooth were standard.—
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First is that the upbeat thesis is fully rational and plausible.—
Noun
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So the complete value proposition of society is different on the island.—
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For families Atlantis’s central proposition is family fun, and a stay at The Cove will position a family to make the most of it.—
Cite this Entry
“Supposition.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supposition. Accessed 13 Jan. 2026.
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