The antonyms for the word "high priest-priestess" are many, depending on the context. Some antonyms may include "layperson," "non-cleric," "follower," or "profane." These terms suggest that a person is not part of the religious hierarchy, does not hold a position of authority, or does not possess any religious powers or knowledge. Other antonyms may include "non-religious," "secular," "atheist," or "agnostic," indicating that a person does not subscribe to any religious beliefs or practices. Ultimately, the antonyms for "high priest-priestess" highlight the diversity of beliefs and practices and the various roles individuals can have within a religion.