The word apostate refers to someone who has abandoned their religious beliefs. When we talk about antonyms for "more apostate," we need to find words that express faithfulness and loyalty to one's religion. Some antonyms for apostate could be devout, faithful, pious, or steadfast. These words suggest a dedication and steadfastness to one's religious beliefs, rather than a rejection of them. Other antonyms could include true believer or devoted worshipper. Whatever words we use, the opposite of apostate is someone who is deeply committed to their religion and practices it with devotion.