mystic, religious mystic: someone who believes in the existence of realities beyond human comprehension
adjective
mysterious, mystic, mystical, occult, secret, orphic: having an import not apparent to the senses nor obvious to the intelligence; beyond ordinary understanding "mysterious symbols", "the mystical style of Blake", "occult lore", "the secret learning of the ancients"
mystic, mystical: relating to or resembling mysticism "mystical intuition", "mystical theories about the securities market"
mystic, mystical: relating to or characteristic of mysticism "mystical religion"
