1. Adjective.  Contrary to reason; lacking an appropriate or sufficient reason; irrational.
  2. Adjective.  Lacking the ability to reason.
  3. Adjective.  (often, philosophy) Not within the domain of what can be understood or analyzed by reason; outside the competence of the rules of reason.
  4. Adjective.  (economics, social sciences) Not based on one's own interests; inconsistent with utility maximization.

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This entry was last updated on RefTopia from its source on 3/20/2012.