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
-
For several decades, bonds have been the unquestionable anchor for portfolios — liquid, stable, and reliable.—
Trefis Team,
Forbes.com,
20 Jan. 2026
-
What is unquestionable is that like millions of other anguished parents, Rob and Michele struggled with how to help their troubled son.—
Cara Lynn Shultz,
PEOPLE,
20 Dec. 2025
Adjective
-
The whiteprint is irrefutable evidence of the Nazis’ murderous intent.—
Elliott Broidy,
Sun Sentinel,
27 Jan. 2026
-
The first is irrefutable; the second, far from that.—
Miami Herald,
Miami Herald,
15 Jan. 2026
Adjective
-
So many warrants were indisputable proof that the shooter had been right to fear for his life.—
Literary Hub,
Literary Hub,
28 Jan. 2026
-
Advantages of buying physical media for your music include indisputable ownership, fewer concerns about the music being AI-generated, the nostalgic kick of analog sound (at least in the case of records and cassettes), the tactile experience of handling your collection and collectibility.—
Brad Moon,
Forbes.com,
23 Jan. 2026
Adjective
-
Duesberg kept making his argument well after evidence that the human immunodeficiency virus, HIV, causes AIDS became incontestable.—
Business Columnist,
Los Angeles Times,
29 Jan. 2026
-
That is to say, there is no one pure ur-movie, unblemished and incontestable.—
Anthony Lane,
New Yorker,
22 Sep. 2025
Adjective
-
No conclusive plan has been formed to either engage in talks with another professional sports team or repurpose the current site of Arrowhead Stadium – though Lucas and LeVota, respectively, said the city and county could explore both in the next five years.—
Ilana Arougheti,
Kansas City Star,
23 Dec. 2025
-
While there is no conclusive evidence indicating a best time to drink aloe vera gel for digestive health, consuming it at specific times may support different health goals.—
Anna Giorgi,
Verywell Health,
23 Dec. 2025
Adjective
-
The feeling of well-being is tangible, and incontrovertible.—
Condé Nast Traveler,
Condé Nast Traveler,
22 Jan. 2026
-
Beauty’s at-times reluctance to embrace TikTok Shop as a channel mirrors the industry’s longtime disinclination toward Amazon, an attitude that has shifted in recent years as the e-commerce giant’s beauty business has grown at an incontrovertible clip.—
Noor Lobad,
Footwear News,
11 Nov. 2025
Adjective
-
At its core, the project circles the same unanswerable question that has hovered over the Beatles for six decades: how did four twenty-somethings from northern England end up reshaping the world through their music?—
Jordan Runtagh,
PEOPLE,
27 Nov. 2025
-
An unanswerable question is how the conservative Justices were influenced by the continual swirl of cases and suits.—
Amy Davidson Sorkin,
New Yorker,
17 Nov. 2025
Adjective
-
In 2025, Rebecca Yarros is that genre’s indubitable champion.—
Rebecca Yarros,
Vulture,
1 Dec. 2025
-
But while the trajectory is indubitable, the ascent is far from smooth, as Ghana’s recent experiences neatly encapsulate.—
Charlie Campbell,
Time,
30 Oct. 2025
Cite this Entry
“Unchallengeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unchallengeable. Accessed 1 Feb. 2026.
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