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Definition of supposition noun from the Oxford Advanced Learner's Dictionary

supposition

noun
 
/ˌsʌpəˈzɪʃn/
 
/ˌsʌpəˈzɪʃn/
(formal)
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  1. [countable] supposition (that…) an idea that you think is true although you may not be able to prove it synonym assumption
    • The police are working on the supposition that he was murdered.
    • All the evidence appears to support this supposition.
    • It seems a reasonable supposition.
    Extra Examples
    • Let's work on the supposition that she meant no offence.
    • She was charged on the supposition that she had colluded with her husband in the murders.
    • They are making all sorts of suppositions about our possible reaction.
    • We can make a supposition about how the accident happened.
    • You are correct in your suppositions about the source of his wealth.
    • There have been some interesting suppositions about the causes of the disease.
    Oxford Collocations Dictionaryadjective
    • reasonable
    • mere
    • pure
    verb + supposition
    • make
    • be based on
    • confirm
    supposition + verb
    • be correct
    • be wrong
    • be based on something
    preposition
    • on (a/​the) supposition
    • supposition about
    • supposition of
    See full entry
  2. [uncountable] the act of believing or claiming that something is true even though it cannot be proved
    • The report is based entirely on supposition.
    • What happened next is a matter of supposition.
    Extra Examples
    • That is mere supposition!
    • the supposition of innocence
    Oxford Collocations Dictionaryadjective
    • reasonable
    • mere
    • pure
    verb + supposition
    • make
    • be based on
    • confirm
    supposition + verb
    • be correct
    • be wrong
    • be based on something
    preposition
    • on (a/​the) supposition
    • supposition about
    • supposition of
    See full entry
  3. Word Originlate Middle English (as a term in scholastic logic): from Old French, or from late Latin suppositio(n-) (translating Greek hupothesis ‘hypothesis’), from the verb supponere, from sub- ‘from below’ + ponere ‘to place’.
See supposition in the Oxford Advanced American DictionarySee supposition in the Oxford Learner's Dictionary of Academic English
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