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[ree-zuh n-lis] /ˈri zən lɪs/
not having any reason or sense:
an utterly reasonless display of anger.
not having a natural capacity for reason.
Origin of reasonless
First recorded in 1350-1400, reasonless is from the Middle English word resonles. See reason, -less
Related forms
reasonlessly, adverb
reasonlessness, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for reasonless
Historical Examples
  • Of all unbeautiful and inappropriate conceptions this is the most reasonless and offensive.

    The Devil's Dictionary Ambrose Bierce
  • You are not oxen,—yet often you are as patient, as dull, as blind and reasonless as they!

    Temporal Power Marie Corelli
  • Too late he cursed the reasonless panic that had sent him into flight.

    Satan Sanderson

    Hallie Erminie Rives
  • Like its antithesis, "lose out," this reasonless phrase is of sport, "sporty."

    Write It Right Ambrose Bierce
  • My dreams, if dreams they may be called, were rhymeless and reasonless.

  • By this man is distinguished from the reasonless creatures, and the noble of men from the base sort.

  • At first, no doubt, it was a chaos of streets and people and buildings and reasonless going to and fro.

    Tono Bungay H. G. Wells
  • Yet they issued from the same vocal chords, unless Forth was having a reasonless, macabre joke.

    The Planet Savers Marion Zimmer Bradley
  • The thought that he was several years her junior produced a reasonless sigh.

    Life's Little Ironies Thomas Hardy
  • Mary said, "No doubt," but a reasonless fear gathered like thin mist across her heart.

    Moth and Rust Mary Cholmondeley

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