Definition supposition in American English

supposition noun

[countable/uncountable] noun

/ˌsʌpəˈzɪʃ(ə)n/

something that you believe is true although you cannot prove it

Example

We presume they were after the diamonds, but that is mere supposition.

Example

We are working on the supposition that Marlowe was murdered.

Synonyms and related words

thought idea belief

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