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

Other Words from supposition

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

Synonyms for supposition


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Examples of supposition in a Sentence

a supposition that proved correct This is just idle supposition.
Recent Examples on the Web But that supposition may be unlikely, since Sevakis seems to have given birth to three children within the span of a few years. Ellise Shafer, Variety, 12 July 2022 There had been some supposition that the rear camera was different this time, based on the fact that so many new features like Deep Fusion and Photographic Styles are available on the iPhone SE. David Phelan, Forbes, 14 Mar. 2022 But every new media format is said to be more immediate, more immersive, and more moving than the one that came before—a fact, or supposition, that commonly intersects with the labeling of wars according to their preeminent broadcast channels. Kaitlyn Tiffany, The Atlantic, 10 Mar. 2022 Latter-day Saints agreed with the supposition of devilish pedophiles running the world. The Salt Lake Tribune, 23 Feb. 2022 The results from the study support Furst’s supposition. Steve Tengler, Forbes, 27 Oct. 2021 In a way, the Egbert situation was a magical event for TSR, something that transmuted supposition into gold. Jon Peterson, Wired, 12 Oct. 2021 As an aside, some are worried that the individual owners will only be the elite and highly wealthy personages, thus leaving out of the equation the rest of society (for my analysis of this supposition, see the link here). Lance Eliot, Forbes, 10 Oct. 2021 There’s a supposition that all art, in its many forms, is an act of rebellion. Seth Combs, San Diego Union-Tribune, 10 Oct. 2021 See More

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.

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

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Last Updated

21 Jul 2022

Cite this Entry

“Supposition.” Dictionary, Merriam-Webster, Accessed 19 Aug. 2022.

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Nglish: Translation of supposition for Spanish Speakers

Britannica English: Translation of supposition for Arabic Speakers Encyclopedia article about supposition


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