[adjective] - (of behaviour) too bad to be protected from criticism, or (of a place) not able to be protected against attackThe war is morally indefensible.His opinions/attitudes are completely indefensible.A few troops are still shooting from what seems like an indefensible position.
INDEFENSIBLE
Meaning of INDEFENSIBLE in English
Cambridge English vocab. Кембриджский английский словарь. 2012