Definition of indefensible adjective from the Oxford Advanced American Dictionary

     

    indefensible

     adjective
    adjective
    NAmE//ˌɪndɪˈfɛnsəbl//
     
     
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  1. 1 that cannot be defended or excused because it is morally unacceptable indefensible behavior The assemblyman was accused of defending the indefensible.
  2. 2(of a place or building) impossible to defend from military attack
See the Oxford Advanced Learner's Dictionary entry: indefensible