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

     

    indefensible

     adjective
    adjective
    BrE BrE//ˌɪndɪˈfensəbl//
     
    ; NAmE NAmE//ˌɪndɪˈfensəbl//
     
    Immoral
     
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  1. 1that cannot be defended or excused because it is morally unacceptable indefensible behaviour The Prime Minister was accused of defending the indefensible. See related entries: Immoral
  2. 2(of a place or building) impossible to defend from military attack
  3. Extra examples I find such behaviour indefensible. It would be morally indefensible for her to desert her father now. The minister was accused of defending the indefensible.
See the Oxford Advanced American Dictionary entry: indefensible