Definition of unimpeachable in English:

unimpeachable

adjective

  • Not able to be doubted, questioned, or criticized; entirely trustworthy.

    ‘an unimpeachable witness’
    • ‘In unimpeachable academic language, those who wish to squander their talents have been presented with yet another excuse to add to the great armoury of excuses that have already gained currency.’
    • ‘That pitch might have been better made against a track record of unimpeachable integrity, where promises had been kept, failure openly acknowledged, and honesty had been the keynote of his government.’
    • ‘They are unquestionable, unassailable, unimpeachable.’
    • ‘But one unimpeachable witness in the court of history is sufficient.’
    • ‘How can you doubt the integrity of players of unimpeachable reputation?’
    • ‘The guys who made these selections are above reproach, they're unimpeachable, these fellows.’
    • ‘His track record is unimpeachable and there can be no doubt that he knows the game inside out.’
    • ‘If Scotland is to live up to its reputation as a first-rate nation, voters - and newspapers - have every right to demand unimpeachable standards from the First Minister.’
    • ‘They are a model of rational discourse, replete with references to the Federalist Papers and other similarly unimpeachable authorities.’
    • ‘I believe that any nominee for a judicial post - let's talk about the Supreme Court - ought to have unimpeachable integrity.’
    • ‘Presumably, as the man in charge of policing local councillors' behaviour, he is a man of unimpeachable moral standards himself?’
    • ‘Here is a man who had an unimpeachable reputation.’
    • ‘At first just one or two publications printed material that previously would have been banned, and a few newspapers criticized what had previously been unimpeachable.’
    • ‘The economic evidence for moving the peak of the long Clinton expansion backwards by two or three months is dubious at best, even if the political rationale is unimpeachable.’
    • ‘Here is an unassuming straight-to-video-worthy horror flick which goes about its job with unimpeachable competence, never troubling to conceal how abjectly derivative and cliched it is.’
    • ‘Its status as an unimpeachable classic - one that is even appreciated by bona fide, elbow patch-sporting intellectuals - looms large over the rest of the genre.’
    • ‘He is almost unimpeachable because to criticise him is seen as poor form.’
    • ‘There's an unimpeachable identification for you.’
    • ‘They said it came from an unimpeachable source.’
    • ‘It was bad enough that at the best possible time to kill this monstrous legislation, in the Commons, with unimpeachable democratic legitimacy, we failed because we couldn't be bothered to turn up.’
    trustworthy, reliable, dependable, unquestionable, unassailable, unchallengeable, above suspicion, beyond suspicion
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Pronunciation

unimpeachable

/ʌnɪmˈpiːtʃəb(ə)l/