Dionysian

[ dahy-uh-nish-uh n, -nis-ee-uh n, -nahy-see- ]
/ ˌdaɪ əˈnɪʃ ən, -ˈnɪs i ən, -ˈnaɪ si- /

adjective

of, relating to, or honoring Dionysus or Bacchus.
recklessly uninhibited; unrestrained; undisciplined; frenzied; orgiastic.

Origin of Dionysian

First recorded in 1600–10; Dionys(us) + -ian
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for dionysian

Dionysian

/ (ˌdaɪəˈnɪzɪən) /

adjective

of or relating to Dionysus
(sometimes not capital) (in the philosophy of Nietzsche) of or relating to the set of creative qualities that encompasses spontaneity, irrationality, the rejection of discipline, etc
(often not capital) wild or orgiastic
of or relating to any of the historical characters named Dionysius
Compare (for senses 2, 3): Apollonian
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012