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reason

/ˈɹiːzən/ · rea·son
noun
  1. A cause The reason for the delay was unforeseen circumstances.
  2. Rational thinking (or the capacity for it); the cognitive faculties, collectively, of conception, judgment, deduction, and intuition Mankind should develop reason above all other virtues.
  3. Something reasonable, in accordance with thought; justice The judge's decision was a reason for hope in the community.
verb
  1. To deduce or come to a conclusion by being rational She tried to reason with her opponent to find a compromise.
  2. To perform a process of deduction or of induction, in order to convince or to confute; to argue He spent hours reasoning with his friends to change their minds.
  3. To converse; to compare opinions They spent the evening reasoning and debating with each other.
Did you know? The phrase 'reason and rhyme' is a common English idiom, referring to the use of logic and poetic language to persuade or convince others.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Aug 3, 2026