apostatize's Usage Examples:

6, however, says that he apostatized in later life and left no writings behind him.

It is impossible to prove that either of the documents actually refers to Christians: they may have been given to pagans who had been accused and had cleared themselves, or to former Christians who had apostatized.

Jerusalem had apostatized, but the country so far as it was populated by Jews was faithful.

155), states that their principal authority was Geber, a Greek who had apostatized to Mahommedanism and lived a century after Mahomet.

Synonyms:

repudiate, apostatise, renounce, tergiversate, disown,

Antonyms:

accept, admit, take office, claim, bequeath,