supposition
noun
sup·po·si·tion ˌsə-pə-ˈzi-shən 
1
: something that is supposed : hypothesis
2
: the act of supposing
suppositional
ˌsə-pə-ˈzish-nəl
adjective -ˈzi-shə-nᵊl
Synonyms
- hypothesis
- proposition
- theory
- thesis
See all Synonyms & Antonyms 
Example Sentences
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
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 Word History
Etymology
Middle English supposicioun, from Anglo-French supposicion, from Late Latin supposition-, suppositio, from Latin, act of placing beneath, from supponere
First Known Use
15th century, in the meaning defined at sense 1
Phrases Containing supposition
supposition
noun
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 Synonyms & Similar Words
Relevance
- hypothesis
- theory
- thesis
- proposition
- assumption
- premise
- guess
- suggestion
- conjecture
- hunch
- inference
- presumption
- speculation
- impression
- suspicion
- presupposition
- surmise
- theorem
- notion
- proposal
- generalization
- premiss
- guesswork
- conception
- concept
- concession
- abstraction
- construct
- feeling
- proffer
- inkling
Antonyms & Near Antonyms
- fact
- knowledge
- certainty
- assurance
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 Synonyms & Similar Words
- guess
- conjecture
- theory
- hypothesis
- surmise
- guessing
- hunch
- speculation
- hypothetical
- thesis
- belief
- intuition
- shot in the dark
- guesswork
- shot
- dead reckoning
- faith
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 Synonyms & Similar Words
- assumption
- theory
- hypothesis
- belief
- premise
- presumption
- presupposition
- if
- postulate
- hypothetical
- given
- premiss
- principle
- proposition
- assertion
- axiom
- inference
- basis
- thesis
- doctrine
- truism
- conclusion
- precept
- verity
- dogma
- law
- tenet
- rule
- gospel
- foundation
- canon
- standard
- declaration
- deduction
- affirmation
- dictum
- ground
- avouchment
- ipse dixit