mystical

• mysticall (obsolete)
• mystickal (obsolete)

From mystic +‎ -al

• IPA^(key): /ˈmɪstɪkəl/, /ˈmɪstɪkl̩/

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mystical (comparative more mystical, superlative most mystical)

1. Relating to mystics or mysticism.
2. Having a spiritual or magical significance that transcends human understanding.
   • 2012 January 1, Stephen Ledoux, “Behaviorism at 100”, in American Scientist‎, volume 100, number 1, page 60:

     Becoming more aware of the progress that scientists have made on behavioral fronts can reduce the risk that other natural scientists will resort to mystical agential accounts when they exceed the limits of their own disciplinary training.

3. Inspiring a sense of spiritual mystery, awe, and fascination.

• mysterious
• mystery
• mystic
• mysticality
• mysticalness
• mysticism
• mystify
• mystique

• mystical in The Century Dictionary, New York, N.Y.: The Century Co., 1911.