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  1. of, relating to, or having the nature of an orgy.
  2. tending to arouse or excite unrestrained emotion: orgiastic rhythms.
  3. Sociology. (of an expressive crowd) reaching a peak of emotional intensity, often of an ecstatic nature and frequently expressed by uninhibited behavior.

Origin of orgiastic

1690–1700; < Greek orgiastikós, derivative (with -tikos -tic) of orgiázein to celebrate orgies (derivative of órgia secret rites; see orgy)


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1. wanton, licentious, debauched, riotous.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Word Origin and History for orgiastic


1690s, from Greek orgiastikos "fit for orgies, exciting," from orgiastes "one who celebrates orgies," from orgiazein "to celebrate orgies," from orgia (see orgy).

Online Etymology Dictionary, © 2010 Douglas Harper