sup·​po·​si·​tion | \ ˌsə-pə-ˈzi-shən How to pronounce supposition (audio) \

Definition of supposition

1 : something that is supposed : hypothesis
2 : the act of supposing

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Other Words from supposition

suppositional \ ˌsə-​pə-​ˈzish-​nəl How to pronounce suppositional (audio) , -​ˈzi-​shə-​nᵊl \ adjective

Examples of supposition in a Sentence

a supposition that proved correct This is just idle supposition.
Recent Examples on the Web Bulls executives found out and there was a lively chat with a supposition about the dangers of not following protocols to prevent a recurrence of the injury. Los Angeles Times, "ESPN’s ‘The Last Dance’ Michael Jordan docuseries: Reactions to the first episodes," 19 Apr. 2020 This might seem a startling supposition to liberal strategists and commentators convinced the Republican Party is digging its own grave. Osita Nwanevu, The New Republic, "End the GOP," 13 Feb. 2020 Now, employ some of your own speculative thought or supposition. Nicole Daniels, New York Times, "Lesson of the Day: ‘On the Trail of America’s First Women to Vote’," 18 Mar. 2020 And there were some doubts in my mind as to whether there was real validity to this supposition that music can fix our problems. Cathy Applefeld Olson, Billboard, "Yusuf/Cat Stevens Shares the Stories Behind His Beloved Classics," 7 June 2019 On the law-and-order side, Arliss Howard is a smart-and-folksy standout as Earl Embry, a brilliant ATF agent prone to the kind of intuitive leaps and suppositions Sodroski is best at writing. Daniel Fienberg, The Hollywood Reporter, "'Manhunt: Deadly Games': TV Review," 3 Feb. 2020 Whole sections of Plagued by Fire feel cantilevered, one extreme supposition extending out from another. Christopher Benfey, Harper's magazine, "Burning Down the House," 25 Nov. 2019 To formally test this supposition, researchers set up camera traps in 2013 and quickly confirmed two tigers' presence. Rachel Nuwer, Scientific American, "Study Reveals Loss of Laos’s Final Tigers," 20 Dec. 2019 By that logic, not only is my original supposition wrong; so is her counterargument. Lauren Elkin, Harper's magazine, "Trash, Rock, Destroy," 25 Nov. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'supposition.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of supposition

15th century, in the meaning defined at sense 1

History and Etymology for supposition

Middle English supposicioun, from Anglo-French supposicion, from Late Latin supposition-, suppositio, from Latin, act of placing beneath, from supponere

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Time Traveler for supposition

Time Traveler

The first known use of supposition was in the 15th century

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Statistics for supposition

Last Updated

5 May 2020

Cite this Entry

“Supposition.” Dictionary, Merriam-Webster, Accessed 1 Jun. 2020.

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How to pronounce supposition (audio)

English Language Learners Definition of supposition

: an idea or theory that you believe is true even though you do not have proof

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