apostate

IPA: ʌpˈɔsteɪt

A person who has renounced a religion or faith.
(Roman Catholicism) One who, after having received sacred orders, renounces his clerical profession.
(by extension) One who has renounced a political party, a cause, etc.

Examples of "apostate" in Sentences

The former wife of the deceased apostate is still living there.
Declaring that person an apostate is impossible and impermissible.
I am deeply grateful for the legacy, albeit apostate from the church.
The group urged Somali parents to let children learn how to handle weapons and fight what it calls the apostate government.
In its message of violent global jihad, al-Qaida rails against U.S. support of Israel and what it calls apostate regimes in the Middle East.
They had charged him as a blasphemer of God, and an apostate from the church; therefore he shows that he is a son of Abraham, and values himself upon his being able to say, Our father Abraham, and that he is a faithful worshipper of the God of Abraham, whom therefore he here calls the God of glory.
The early Reformers probably realized this but they felt the necessity of building up some sort of a Church which could bind together its members into a corporate body professing unity of belief and worship, and which, in contrast with the pope's Church, which they called apostate, could be called the true Church of God.