1. A disloyal person who betrays or deserts his cause or religion or political party or friend etc.
   "The politician was labelled an apostate after switching parties";
   - deserter, renegade, turncoat, recreant [archaic], ratter

1. Not faithful to religion, party or cause
   "The apostate member was expelled from the religious group"

Derived forms: apostates

See also: unfaithful

Type of: quitter

Encyclopedia: Apostate