Definition of mutual adjective from the Oxford Advanced Learner's Dictionary

      

    mutual

     adjective
    adjective
    BrE BrE//ˈmjuːtʃuəl//
     
    ; NAmE NAmE//ˈmjuːtʃuəl//
     
     
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  1. 1used to describe feelings that two or more people have for each other equally, or actions that affect two or more people equally mutual respect/understanding mutual support/aid They parted by mutual consent. I don't like her, and I think the feeling is mutual (= she doesn't like me either).
  2. 2[only before noun] shared by two or more people We met at the home of a mutual friend. They soon discovered a mutual interest in music.
  3. Word Origin late 15th cent.: from Old French mutuel, from Latin mutuus ‘mutual, borrowed’; related to mutare ‘to change’.
See the Oxford Advanced American Dictionary entry: mutual