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assumption

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UK:^*^*UK and possibly other pronunciationsUK and possibly other pronunciations'assumption', 'Assumption': /əˈsʌmpʃən/

US:USA pronunciation: IPAUSA pronunciation: IPA/əˈsʌmpʃən/

US:USA pronunciation: respellingUSA pronunciation: respelling(ə sump′shən)

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assumption
WordReference English Thesaurus © 2026

Sense: Noun: belief

Synonyms:

presumption, presupposition, supposition, conjecture, hypothesis, guess , theory , speculation, thought , belief , idea , concept , postulate, premise , fancy

Antonyms:

fact , proven fact

Sense: Noun: act of taking for granted

Synonyms:

supposition, presupposition, presumption, supposal, conjecture, taking for granted, theorization, theorisation (UK), surmising, surmise, hypothesization, hypothesisation (UK), hypothesizing, hypothesising (UK), supposing, presupposing, presuming, theorizing, theorising (UK)

Antonyms:

doubt , disagreement, questioning, disbelief , rejection , surprise

Sense: Noun: taking on responsibility

Synonyms:

acceptance , accepting, assuming, taking on, taking up, taking over, shouldering, acquisition , appropriation, takeover , seizure , taking , usurpation, arrogation

Antonyms:

giving, granting, distribution , loss , abandonment, surrender , giving up, handing over, relinquishing

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