Definition of indefensible in US English:

indefensible

adjective

  • 1Not justifiable by argument.

    ‘the policy of apartheid was morally indefensible’
    • ‘This process of distillation allows us to impose order upon chaos and to justify the indefensible.’
    • ‘However, that sort of position is logically untenable and morally indefensible.’
    • ‘That, to me, is totally unacceptable and morally indefensible.’
    • ‘Although it must be defended, the British budget rebate is indefensible.’
    • ‘Despite regular meetings, you fail to notify your superiors of problems both with the build and with the budget, putting them in an indefensible public position.’
    • ‘Yes, budget deficits and indefensible tax cuts are moral issues, too.’
    • ‘And defenses of his indefensible argument are indefensible too.’
    • ‘His logic is flawed, indefensible and dangerous.’
    • ‘Yet the worst that can reasonably be said about his performance is that he made an indefensible remark from which he ineptly tried to climb down at first prompting.’
    • ‘Benchmarking awards, seen by many as utterly indefensible and absurd under current economic conditions, will be paid.’
    • ‘‘It is indefensible that you have not made funding for homeland security your top priority,’ the letter said.’
    • ‘The idea that our arguments and ideas are indefensible is patently ridiculous.’
    • ‘It is difficult to calculate how many billions of dollars the government spends on indefensible, if not illegal, self-promotion.’
    • ‘Instead, they defend an act which is simply indefensible.’
    • ‘How about morally indefensible, legally absurd, and nationally divisive?’
    • ‘The stance is otherwise totally indefensible.’
    • ‘Anything less will amount to a pay cut and that is morally and economically indefensible.’
    • ‘This is fundamentally flawed and scientifically indefensible.’
    • ‘But that doesn't justify this behavior, which is indefensible on several grounds.’
    • ‘This theme is one of the elements in his new work, a detailed examination of the brutal history and indefensible consequences of aerial bombardment.’
    inexcusable, unjustifiable, unjustified, unpardonable, unforgivable, inexpiable
    untenable, insupportable, unsustainable, unwarrantable, unwarranted, unjustifiable, unjustified, unsound, ill-founded, unfounded, groundless, baseless, flimsy, weak, shaky, flawed, faulty, defective, invalid, specious, arbitrary, implausible, absurd, illogical, irrational, preposterous, senseless, unacceptable
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  • 2Not able to be protected against attack.

    ‘the towns were tactically indefensible’
    • ‘Hanover had been made as secure as any flat and virtually indefensible country could be.’
    • ‘The city was situated in such a way that made it indefensible against attack, leading them to compromise rather than be conquered.’
    undefendable, defenceless, undefended, unfortified, unguarded, unprotected, unshielded, unarmed, without arms, without weapons, without defences
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Pronunciation

indefensible

/ˌindəˈfensəb(ə)l//ˌɪndəˈfɛnsəb(ə)l/