Definition of indefensible in US English:

indefensible

adjective

  • 1Not justifiable by argument.

    ‘the policy of apartheid was morally indefensible’
    • ‘How about morally indefensible, legally absurd, and nationally divisive?’
    • ‘This process of distillation allows us to impose order upon chaos and to justify the 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.’
    • ‘This theme is one of the elements in his new work, a detailed examination of the brutal history and indefensible consequences of aerial bombardment.’
    • ‘Yes, budget deficits and indefensible tax cuts are moral issues, too.’
    • ‘However, that sort of position is logically untenable and morally indefensible.’
    • ‘Anything less will amount to a pay cut and that is morally and economically indefensible.’
    • ‘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.’
    • ‘Instead, they defend an act which is simply indefensible.’
    • ‘‘It is indefensible that you have not made funding for homeland security your top priority,’ the letter said.’
    • ‘It is difficult to calculate how many billions of dollars the government spends on indefensible, if not illegal, self-promotion.’
    • ‘But that doesn't justify this behavior, which is indefensible on several grounds.’
    • ‘That, to me, is totally unacceptable and morally indefensible.’
    • ‘And defenses of his indefensible argument are indefensible too.’
    • ‘The idea that our arguments and ideas are indefensible is patently ridiculous.’
    • ‘This is fundamentally flawed and scientifically indefensible.’
    • ‘Although it must be defended, the British budget rebate is indefensible.’
    • ‘The stance is otherwise totally indefensible.’
    • ‘Benchmarking awards, seen by many as utterly indefensible and absurd under current economic conditions, will be paid.’
    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/