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English definition of “indefensible”

indefensible

adjective     /ˌɪn.dɪˈfen.sɪ.bl̩/
too bad to be protected from criticism: The war is morally indefensible. His opinions/attitudes are completely indefensible.Not good enough not able to be protected against attack: indefensible bordersWeakness and vulnerabilityUnsafe and insecure indefensibly     /-bli/ adverb Not good enough
(Definition of indefensible adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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