unimpeachable
Americanadjective
adjective
Other Word Forms
Etymology
Origin of unimpeachable
First recorded in 1775–85; un- 1 + impeachable
Explanation
Unimpeachable describes someone or something that is totally, completely, without any doubt, innocent and good, like an unimpeachable role model who avoids bad influences and sketchy situations. Impeach means "to accuse, or charge with a crime." It is a verb usually reserved for when high-ranking officials like presidents do something wrong. So, when you add the prefix un- and the suffix -able, the result is an adjective that means "not able to be accused," in other words, beyond doubt or question. If you run for public office and your past is unimpeachable, your opponents will have nothing to use against you in their advertisements.
Vocabulary lists containing unimpeachable
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
At a certain point, insisting that the vegetable also arrive pristine, seasonal and morally unimpeachable begins to feel less like nutrition advice than an elaborate entrance exam.
From Salon ● Sep. 15, 2026
It’s staggering to me that we have hundreds of pages of judicial fact-finding and unimpeachable testimony gathered by the district court.
From Slate ● Jun. 3, 2026
“Kevin Warsh’s unimpeachable background speaks for itself,” a White House spokesman told Barron’s.
From Barron's ● Apr. 24, 2026
Jack balks at the assignment, saying the judge is unimpeachable.
From The Wall Street Journal ● Oct. 23, 2025
Morrison raised his eyebrows to indicate the unimpeachable logic of this statement.
From "Middlesex: A Novel" by Jeffrey Eugenides
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Get a wordDefinitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
