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Definition of unimpeachable adjective from the Oxford Advanced Learner's Dictionary

unimpeachable

adjective

/ˌʌnɪmˈpiːtʃəbl/

/ˌʌnɪmˈpiːtʃəbl/

(formal, approving)

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that you cannot doubt or question
- evidence from an unimpeachable source
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See unimpeachable in the Oxford Advanced American Dictionary

Check pronunciation: unimpeachable

Nearby words

noun

From the Word list

B2

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