Definition of ingrained adjective from the Oxford Advanced American Dictionary

     

    ingrained

     adjective
    adjective
    NAmE//ˈɪnɡreɪnd//
     
    , NAmE//ɪnˈɡreɪnd//
     
     
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  1. 1ingrained (in somebody/something) (of a habit, an attitude, etc.) that has existed for a long time and is therefore difficult to change synonym deep-rooted ingrained prejudices The belief that we should do our duty is deeply ingrained in most of us.
  2. 2(of dirt) under the surface of something and therefore difficult to get rid of
See the Oxford Advanced Learner's Dictionary entry: ingrained