unimpeachable
adjective
un·im·peach·able
ˌən-im-ˈpē-chə-bəl 
: not impeachable: such as
a
: reliable beyond a doubt
unimpeachable evidence
an unimpeachable source
b
: not liable to accusation : irreproachable
an unimpeachable reputation
Examples of unimpeachable in a Sentence
a person of unimpeachable integrity
The information is from an unimpeachable source.
Recent Examples on the Web
And for nearly 200 years, the Navier-Stokes equations have served as an unimpeachable theory of how fluids in the real world behave — from ocean currents threading their way between the continents to air wrapping around an aircraft’s wings.
—
Quanta Magazine, 9 Jan. 2026
Part of me believes that, if Indiana wins, Cignetti should retire after this season and spend the rest of his life on a beach, scowling at resort attendants and being basically unimpeachable forever.
—Will Leitch, New York Times, 6 Jan. 2026
As a subject, Hind is unimpeachable, which may be why so many of the Hollywood elite, a famously risk-averse group, signed on to the film as executive producers.
—E. Alex Jung, Vulture, 11 Dec. 2025
But this is what happens when an athlete reaches unimpeachable status.
—Bennett Durando, Denver Post, 21 Nov. 2025
See All Example Sentences for unimpeachable
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Quanta Magazine, 9 Jan. 2026
Part of me believes that, if Indiana wins, Cignetti should retire after this season and spend the rest of his life on a beach, scowling at resort attendants and being basically unimpeachable forever.
—Will Leitch, New York Times, 6 Jan. 2026
As a subject, Hind is unimpeachable, which may be why so many of the Hollywood elite, a famously risk-averse group, signed on to the film as executive producers.
—E. Alex Jung, Vulture, 11 Dec. 2025
But this is what happens when an athlete reaches unimpeachable status.
—Bennett Durando, Denver Post, 21 Nov. 2025
See All Example Sentences for unimpeachable
Cite this Entry
“Unimpeachable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unimpeachable. Accessed 14 Jan. 2026.
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unimpeachable
adjective
un·im·peach·able
ˌən-im-ˈpē-chə-bəl
: not impeachable : not to be doubted or questioned : irreproachable
an unimpeachable reputation
news from an unimpeachable source
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