Definition of supposition in English:

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Pronunciation: /ˌsəpəˈziSH(ə)n/


An uncertain belief: they were working on the supposition that his death was murder their outrage was based on supposition and hearsay
More example sentences
  • Hypotheses, suppositions tentatively accepted, help the therapist to focus on what seems most relevant at that moment.
  • There is no direct evidence, and what follows is too contingent on a series of hypothetical suppositions to be convincing.
  • In most cases, however, this kind of mutual informing included only assumptions and suppositions.
belief, surmise, idea, notion, suspicion, conjecture, speculation, inference, theory, hypothesis, postulation, guess, feeling, hunch, assumption, presumption



Pronunciation: /ˌsəpəˈziSH(ə)n(ə)l/
Example sentences
  • Willingness to understand differences at the suppositional level can also generate goodwill.


Late 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 (see suppose).

For editors and proofreaders

Syllabification: sup·po·si·tion

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