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

     

    impalpable

     adjective
    adjective
    BrE BrE//ɪmˈpælpəbl//
     
    ; NAmE NAmE//ɪmˈpælpəbl//
     
    (formal)
     
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  1. 1that cannot be felt physically
  2. 2very difficult to understand
  3. opposite palpable
    Word Origin early 16th cent.: from French, or from late Latin impalpabilis, from in- ‘not’ + palpabilis, from Latin palpare ‘feel, touch gently’.
See the Oxford Advanced American Dictionary entry: impalpable