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From a- +‎ rational.



arational (comparative more arational, superlative most arational)

  1. (chiefly philosophy) Not within the domain of what can be understood or analyzed by reason; not rational, outside the competence of the rules of reason. [from 20th c.]
    • 1938, Marten Ten Hoor, “The Philistines over Philosophy,”, in The Journal of Philosophy, volume 35, number 20, page 542:
      If the end-product of a man's philosophizing about the nature of the cosmos is the ultimate, arational matter, this will affect his moral opinion of the cosmos.
    • 1974, Ervin Laszlo, “Why Should I Believe in Science?”, in Philosophy and Phenomenological Research, volume 34, number 4, page 484:
      Scientific knowledge is conceptual, rational, and testable. Mystical knowledge is usually aconceptual, arational, and does not lend itself to interpersonal testing.
    • 1996, David Foster Wallace, Infinite Jest [], Boston, Mass., New York, N.Y.: Little, Brown and Company, →ISBN, page 146:
      Regarded with the objectivity of hindsight, the illusion appears arational, almost fantastic: it would be like being able both to lie and to trust other people at the same time.
    • 2001, Ronald De Sousa, “Moral Emotions,”, in Ethical Theory and Moral Practice, volume 4, number 2, page 109:
      On the first view, emotions are purely biological phenomena. . . . They are arational and amoral, like other natural bodily functions.


Related terms[edit]




a- +‎ rational.


  • IPA(key): [ˈaʁat͡si̯oˌnaːl]
  • Hyphenation: ara‧ti‧o‧nal
  • (file)


arational (strong nominative masculine singular arationaler, not comparable)

  1. arational


Further reading[edit]