What is the meaning of reason?


  • A rational motive for a belief or action.
    • usage: "the reason that war was declared"; "the grounds for their declaration"
  • An explanation of the cause of some phenomenon.
    • usage: "the reason a steady state was never reached was that the back pressure built up too slowly"
  • The capacity for rational thought or inference or discrimination.
    • usage: "we are told that man is endowed with reason and capable of distinguishing good from evil"
  • The state of having good sense and sound judgment.
    • usage: "his rationality may have been impaired"; "he had to rely less on reason than on rousing their emotions"
  • A justification for something existing or happening.
    • usage: "he had no cause to complain"; "they had good reason to rejoice"
  • A fact that logically justifies some premise or conclusion.
    • usage: "there is reason to believe he is lying"


  • Decide by reasoning; draw or come to a conclusion.
    • usage: "We reasoned that it was cheaper to rent than to buy a house"
  • Present reasons and arguments.
  • Think logically.
    • usage: "The children must learn to reason"
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APAWordNet. (2010). reason. Retrieved April 22, 2019, from http://smartdefine.org/reason/definitions/1213787
ChicagoWordNet. 2010. "reason" http://smartdefine.org/reason/definitions/1213787 (accessed April 22, 2019).
HarvardWordNet 2010, reason, Smart Define, viewed 22 April, 2019, <http://smartdefine.org/reason/definitions/1213787>.
MLAWordNet. "reason" 23 October 2010. Web. 22 April 2019. <http://smartdefine.org/reason/definitions/1213787>
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