# apostasy

/ɐpˈɒstəsi/ (UK) · CEFR C2 · Noun

Source: https://englishreference.com/word/apostasy
Updated: 2026-05-19

## Definition

the act of leaving a religion or a political group that you were a member of. It is often seen as a very serious or shocking choice.

For teachers: the formal renunciation of a religion, political party, or other group to which one previously belonged. Often carries a strong negative or scandalous connotation.

## Examples

- The leader's apostasy caused a major split in the party.
- The former minister's public apostasy from the party's core values led to his immediate resignation.
- Historians often debate whether the emperor's apostasy was a calculated political move or a genuine crisis of faith that destabilized the empire.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.