apostasy (n.)youdaoicibaDictYouDict[apostasy 词源字典]
late 14c., "renunciation, abandonment or neglect of established religion," from Latin apostasia, from later Greek apostasia, from apostasis "revolt, defection," literally "a standing off" (see apostate). General (non-religious) sense is attested from 1570s.[apostasy etymology, apostasy origin, 英语词源]