Definition of unreasoning adjective from the Oxford Advanced American Dictionary

     

    unreasoning

     adjective
    adjective
    NAmE//ʌnˈrizənɪŋ//
     
    [usually before noun](formal)
     
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  1. 1not based on facts or reason synonym irrational
  2. 2 unreasoning fear
See the Oxford Advanced Learner's Dictionary entry: unreasoning