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English definition of “apostasy”

apostasy

noun [U] uk   /əˈpɒs.tə.si/ us    /-ˈpɑː.stə-/ formal
the act of giving up your religious or political beliefs and leaving a religion or a political party: In those days apostasy was punishable by death.Believers and non-believersSupporters, members and defenders
(Definition of apostasy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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