as in unquestionable
not capable of being challenged or proved wrong
the contention that there are certain unchallengeable rules governing proper grammar
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Recent Examples of unchallengeable
Regular board and executive succession planning, with a balance of independent directors, can ensure the right questions are asked and no single person becomes unchallengeable.
—
James Henderson, Forbes, 4 Dec. 2024
Unlike Biden, Trump’s intraparty position is nearly unchallengeable.
—The Editors, National Review, 3 July 2024
No longer having to play cosmetic chemist is an unchallengeable win.
—Essence, 23 Oct. 2023
This was rooted in a calculation that America’s greatest source of strength was global perceptions of the country as unchallengeable.
—Max Fisher, New York Times, 18 Mar. 2023
In the heady days after the Cold War, the order appeared both unchallenged and unchallengeable.
—Ivo Daalder, Foreign Affairs, 21 June 2022
Alternatively, maybe journalists and, later, historians, felt that to focus on the unsolved mystery of the break-in would somehow diminish the unchallengeable fact of Nixon’s guilt in the cover-up and various other scandals unearthed in the Watergate investigations and after.
—Timothy Noah, The New Republic, 17 June 2022
However, authoritarian leaders like Vladimir Putin and Mohammed bin Salman are both extremely personally wealthy in ways that are harder to calculate and also have unchallengeable access to the vast wealth of their nations.
—Sean O'Kane, The Verge, 7 Jan. 2021
James Henderson, Forbes, 4 Dec. 2024
Unlike Biden, Trump’s intraparty position is nearly unchallengeable.
—The Editors, National Review, 3 July 2024
No longer having to play cosmetic chemist is an unchallengeable win.
—Essence, 23 Oct. 2023
This was rooted in a calculation that America’s greatest source of strength was global perceptions of the country as unchallengeable.
—Max Fisher, New York Times, 18 Mar. 2023
In the heady days after the Cold War, the order appeared both unchallenged and unchallengeable.
—Ivo Daalder, Foreign Affairs, 21 June 2022
Alternatively, maybe journalists and, later, historians, felt that to focus on the unsolved mystery of the break-in would somehow diminish the unchallengeable fact of Nixon’s guilt in the cover-up and various other scandals unearthed in the Watergate investigations and after.
—Timothy Noah, The New Republic, 17 June 2022
However, authoritarian leaders like Vladimir Putin and Mohammed bin Salman are both extremely personally wealthy in ways that are harder to calculate and also have unchallengeable access to the vast wealth of their nations.
—Sean O'Kane, The Verge, 7 Jan. 2021
Recent Examples of Synonyms for unchallengeable
Adjective
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And yet there’s an unquestionable high-tech Zen verve to the space.—
Anthony Paletta,
Curbed,
2 Sep. 2025
-
For decades, blue jeans have reigned as the unquestionable staple in wardrobes around the world.—
René Chávez Esparza,
Glamour,
16 Aug. 2025
Adjective
-
This is one example—despite longstanding beliefs—of an irrefutable truth.—
Russell M. Nelson,
Time,
5 Sep. 2025
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Yet despite how normal these individuals may think their views on vulnerability are, the pain these ideologies can cause is still irrefutable.—
Mark Travers,
Forbes.com,
25 Aug. 2025
Adjective
-
While the town's change is indisputable—and some of this change isn’t great, including environmental destruction and the displacement of residents—there are a handful of properties along Tulum’s famed beach road that still do tourism right.—
Michaela Trimble,
Vogue,
27 Aug. 2025
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Simona Granati - Corbis/Getty Images The connection between intellectual property rights, economic competitiveness, and military readiness is indisputable.—
Mircea Geoană,
MSNBC Newsweek,
27 Aug. 2025
Adjective
-
Despite the discouraging tendency these days to see everything through a political prism, the science itself is incontestable and apolitical: Climate change is caused by human activity, primarily the use fossil fuels, like coal, oil and gas.—
Caitlin Looby,
jsonline.com,
24 July 2025
-
Second, combining data from different IoT devices revealed incontestable details of Alex Murdaugh’s activities.—
David Sella-Villa,
The Conversation,
24 June 2025
Adjective
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The geranium and the gingko tree yield data but no conclusive results.—
Stephanie Bunbury,
Deadline,
5 Sep. 2025
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But there are some good supporting turns, starting with Henry, Tony’s main Interpol contact, who appears from early episodes to be a good guy the leads are mistaking for a bad guy, although nothing is completely conclusive there right away.—
Chris Willman,
Variety,
4 Sep. 2025
Adjective
-
The evidence is incontrovertible.—
Agustino Fontevecchia,
Forbes.com,
26 Aug. 2025
-
This time, at least, the decision was incontrovertible by the letter of the law.—
Matt Woosnam,
New York Times,
18 Aug. 2025
Adjective
-
Unknown outcomes for so many negotiations leave supply chains with unanswerable questions.—
SJ Guest Editorial,
Sourcing Journal,
16 May 2025
-
Those larger questions might be unanswerable, but astrology’s longevity and popularity aren’t up for debate.—
Alex Abad-Santos,
Vox,
4 Apr. 2025
Adjective
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Lush greenery in wicker creates a cottage feel Wicker retaining walls add indubitable charm.—
Katherine McLaughlin,
Architectural Digest,
18 Apr. 2025
-
The DeSantis announcement is an indubitable win for Musk.—
Scott Nover,
Quartz,
24 May 2023
Cite this Entry
“Unchallengeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unchallengeable. Accessed 9 Sep. 2025.
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