/ əˈpɒsteɪt; NAmE əˈpɑːs-/ noun
( formal ) a person who has rejected their religious or political beliefs
► apos·tasy / əˈpɒstəsi; NAmE əˈpɑːs-/ noun [ U ]
••
WORD ORIGIN
Middle English : from ecclesiastical Latin apostata , from Greek apostatēs apostate, runaway slave.