Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
apostasy is a noun meaning "the state of having rejected your religious beliefs or your political party or a cause (often in favor of opposing beliefs or causes)". It carries 2 recorded senses.
the state of having rejected your religious beliefs or your political party or a cause (often in favor of opposing beliefs or causes)
the act of abandoning a party for cause
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for apostasy come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.