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diabolism

[dahy-ab-uh-liz-uh m]
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noun
  1. Theology.
    1. action aided or caused by the devil; sorcery; witchcraft.
    2. the character or condition of a devil.
    3. a doctrine concerning devils.
    4. a belief in or worship of devils.
  2. action befitting the devil; deviltry.
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Origin of diabolism

1600–10; < Greek diábol(os) devil + -ism
Related formsdi·ab·o·list, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for diabolist

diabolism

noun
    1. activities designed to enlist the aid of devils, esp in witchcraft or sorcery
    2. worship of devils or beliefs and teachings concerning them
    3. the nature of devils
  2. character or conduct that is devilish or fiendish; devilry
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Derived Formsdiabolist, noun
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

Word Origin and History for diabolist

diabolism

n.

c.1600s, from Ecclesiastical Greek diabolos "devil" (see devil (n.)) + -ism.

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Online Etymology Dictionary, © 2010 Douglas Harper