Answer:

apostate

AnswerCrossword Clue
APOSTATECause forsaker
APOSTATEForsaker of the faith
APOSTATEReligion renouncer
APOSTATECause abandoner
APOSTATEOne who has lapsed
APOSTATETurncoat.
APOSTATEBackslider.
APOSTATERecreant.
APOSTATERenegade
APOSTATEFormer believer
APOSTATETurncoat
APOSTATEJulian the...
APOSTATEOne who's fallen
APOSTATEDeserter
APOSTATEOne who loses faith
APOSTATEParty switcher, say
APOSTATEFaith forsaker
APOSTATERenouncer of one's faith