Search Result for "mysticism": 
Wordnet 3.0

NOUN (2)

1. a religion based on mystical communion with an ultimate reality;
[syn: mysticism, religious mysticism]

2. obscure or irrational thought;

The Collaborative International Dictionary of English v.0.48:

Mysticism \Mys"ti*cism\, n. [Cf. F. mysticisme.] 1. Obscurity of doctrine. [1913 Webster] 2. (Eccl. Hist.) The doctrine of the Mystics, who professed a pure, sublime, and wholly disinterested devotion, and maintained that they had direct intercourse with the divine Spirit, and aquired a knowledge of God and of spiritual things unattainable by the natural intellect, and such as can not be analyzed or explained. [1913 Webster] 3. (Philos.) The doctrine that the ultimate elements or principles of knowledge or belief are gained by an act or process akin to feeling or faith. [1913 Webster]
WordNet (r) 3.0 (2006):

mysticism n 1: a religion based on mystical communion with an ultimate reality [syn: mysticism, religious mysticism] 2: obscure or irrational thought
Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "mysticism": afflatus, anagoge, anagogics, anthroposophy, apocalypse, cabala, cabalism, direct communication, divine inspiration, divine revelation, epiphany, esotericism, esoterics, esoterism, esotery, hocus-pocus, inspiration, mumbo jumbo, mystery, mystical experience, mystification, occultism, prophecy, revelation, symbolics, symbolism, theophania, theophany, theopneustia, theopneusty, yoga, yogeeism, yogism