IPA: /əˈpɒsteɪt/
KK: /əˈpɑːsteɪt/
A person who has abandoned or rejected their religious faith or beliefs.
After years of questioning his faith, he finally identified himself as an apostate.
Apostate → It is formed from "apo-" (meaning away from) and "stasis" (meaning standing or standing firm). The word describes someone who stands away from a belief or faith, particularly in a religious context.
Think of someone who has 'stood away' ('apo-') from their beliefs or faith, which is why an apostate is someone who has renounced their religion.