A person who renounces his or her faith; an apostate.

A person who deserts, betrays, or is disloyal to an organization, country, or set of principles; a turncoat, a traitor. Also more generally: a scoundrel, a reprobate.

That defies, resists, or refuses to recognize lawful or established authority; rebellious; (in later use) specifically designating a North American Indian refusing to abide by treaties signed with white settlers.