a·pos·tle
əˈpäsəl/
noun
noun: apostle; plural noun: apostles
. a vigorous and pioneering advocate or supporter of a particular policy, idea, or cause.
"Leo Buscaglia, leading apostle of love and okayness"
a·pos·tate
əˈpäˌstāt,əˈpästət/
noun
-
1.a person who renounces a religious or political belief or principle.synonyms: dissenter, defector, deserter, traitor, backslider, turncoat;More
adjective
-
1.abandoning a religious or political belief or principle.