unimpeachable

adjective

un·​im·​peach·​able ˌən-im-ˈpē-chə-bəl How to pronounce unimpeachable (audio)
Synonyms of unimpeachablenext
: not impeachable: such as
a
: reliable beyond a doubt
unimpeachable evidence
an unimpeachable source
b
: not liable to accusation : irreproachable
an unimpeachable reputation
unimpeachably
ˌən-im-ˈpē-chə-blē How to pronounce unimpeachable (audio)
adverb

Examples of unimpeachable in a Sentence

a person of unimpeachable integrity The information is from an unimpeachable source.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And his staging’s faithfulness to the film is unimpeachable. — Rob Hubbard, Twin Cities, 25 Apr. 2026 Relative to some of the real heavy hitters in this competition, Mexico are not stacked with unimpeachable star power. — Jack Lang, New York Times, 1 July 2026 Conventional wisdom dictates that Buckley is the unimpeachable front-runner here. — Savannah Walsh, Vanity Fair, 13 Mar. 2026 Bream, in particular, finds Ross’s solo career unimpeachable. — Devon Ivie, Vulture, 14 May 2026 See All Example Sentences for unimpeachable

Word History

First Known Use

1784, in the meaning defined above

Time Traveler
The first known use of unimpeachable was in 1784

Rhymes for unimpeachable

See All Rhymes for unimpeachable

Browse Nearby Words

unimpeachability
unimpeachable
unimpeached
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Cite this Entry

“Unimpeachable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unimpeachable. Accessed 8 Jul. 2026.

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Kids Definition

unimpeachable

adjective
un·​im·​peach·​able ˌən-im-ˈpē-chə-bəl How to pronounce unimpeachable (audio)
: not impeachable : not to be doubted or questioned : irreproachable
an unimpeachable reputation
news from an unimpeachable source
unimpeachably
-blē How to pronounce unimpeachable (audio)
adverb

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Thesaurus: All synonyms and antonyms for unimpeachable

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