Definition of inexcusable adjective from the Oxford Advanced American Dictionary

     

    inexcusable

     adjective
    adjective
    NAmE//ˌɪnɪkˈskyuzəbl//
     
     
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  1. 1too bad to accept or forgive synonym unjustifiable
  2. 2 inexcusable rudeness opposite excusable
inexcusably
 
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NAmE//ˌɪnɪkˈskyuzəbli//
 
adverb
See the Oxford Advanced Learner's Dictionary entry: inexcusable