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Meaning of irrationalism

ir•ra•tion•al•ism

Pronunciation: (i-rash'u-nl-iz"um), [key]
— n.
  1. irrationality in thought or action.
  2. an attitude or belief having a nonrational basis.
  3. a theory that nonrational forces govern the universe.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.