Irrational thought, expression, or behavior; irrationality. (noun)
Belief in feeling, instinct, or other nonrational forces rather than reason. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "irrationalism" in a sentence
"For a bird's-eye view of the history of the idea of irrationalism in philosophy, two preliminary method - ological observations are in order."
"It is being argued that the gov't should intervene in the decision to save vs. consume because such decisions are being made by 'non-market' factors such as irrationalism, people with poor financial education, 'media perceptions' etc."
"Berlin does concede that Hamann was not a "heaven-storming" irrationalist, but he does not specify how his "irrationalism" differs from that of the heaven-stormers."