adjective

1. of mysteries, or esoteric rites or doctrines
2. mystical
3. of obscure or occult character or meaning mystic powers
4. beyond human comprehension; mysterious or enigmatic
5. filling one with wonder or awe
6. having magic power

Etymology: ME mistik < L mysticus < Gr mystikos, belonging to secret rites < mystēs, one initiated: see mystery

noun

1. a person initiated into esoteric mysteries
2. a believer in mysticism; specif., one who professes to undergo mystical experiences and so to comprehend intuitively truths beyond human understanding