Definition from Wiktionary, the free dictionary
mysticist (plural mysticists)
- One who is involved in mysticism.
2007 July 10, Dave Kehr, “New DVDs”, in New York Times:
- Directed by the Midwestern mysticist Michael Polish (“Twin Falls, Idaho”).
- (religionists) religion, religionist; African traditionalist, animist, Asatruar, Baha'i, Buddhist, Christian, Confucianist, deist, Druid, Eckist, freethinker, heathen, Hindu, Jain, Jew, LaVeyan, Luciferian, Muslim, mysticist, New Thoughter, New Ager, occultist, Odinist, pagan, Rastafarian, Raëlian, religious humanist, Santerían, Scientologist, shamanist, Shintoist, Sikh, spiritist, Taoist, Tenrikyoist, Thelemite, theosophist, Unitarian Universalist, Wiccan, Zoroastrian (Category: en:Religion) 
mysticist (not comparable)
- Relating to mysticism