apostasy
apos.ta.sy \*-'pa:s-t*-se-\ n [ME apostasie, fr. LL apostasia, fr. Gk, lit., revolt, fr. aphis]tasthai to revolt, fr. apo- + histasthai to stand 1: renunciation of a religious faith 2: DEFECTION
Webster's English Dictionaryapos.ta.sy \*-'pa:s-t*-se-\ n [ME apostasie, fr. LL apostasia, fr. Gk, lit., revolt, fr. aphis]tasthai to revolt, fr. apo- + histasthai to stand 1: renunciation of a religious faith 2: DEFECTION