Definition of "demonism" in English

noun

1. (uncountable) Belief in, or worship of demons or devils.

   • 1699, Anthony Ashley-Cooper, 3rd Earl of Shaftesbury, Of Virtue, and the Belief of a Deity, in An Inquiry Concerning Virtue in Two Discourses, London: A. Bell et al., p. 10, […] if he believes more of the prevalency of an ill designing Principle than of a good one, he is then more a Daemonist than he is a Theist, and may be called a Daemonist from the side to which the balance most inclines. ¶ All these sorts both of Daemonism, Polytheism, Atheism, and Theism, may be mixed […]

2. (uncountable, often figurative) The quality of being demonic.

   • 1915, Henry James, letter to Evan Charteris dated 22 January, 1915 in Percy Lubbock (ed.), The Letters of Henry James, London: Macmillan, Volume 2, p. 453, What a pitiful horror indeed must that Ypres desolation and desecration be—a baseness of demonism.

3. (countable) An act or event attributed to demons or devils; an evil act.