D defs.my
Entry 1 sense Webster, 1913

Apostatize

· A·pos·ta·tize · IPA
01 v. i. To renounce totally a religious belief once professed; to forsake one's church, the faith or principles once held, or the party to which on…
imp. & p. p. Apostatized; p. pr. & vb. n. Apostatizing
  1. 1.
    To renounce totally a religious belief once professed; to forsake one's church, the faith or principles once held, or the party to which one has previously adhered.
    “He apostatized from his old faith in facts, took to believing in �emblances.” Carlyle.