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
-
At the same time, they’re reminded that their authority must be unquestionable.—
Cheryl Robinson,
Forbes.com,
19 Sep. 2025
-
And yet there’s an unquestionable high-tech Zen verve to the space.—
Anthony Paletta,
Curbed,
2 Sep. 2025
Adjective
-
An 0-3 record writes its own irrefutable story, and a critical late Tagovailoa interception was its punctuation.—
Miami Herald,
Miami Herald,
19 Sep. 2025
-
If the team finds irrefutable signs of an atmosphere, even more Webb telescope observations could be warranted in the hopes of detecting specific chemical signatures of gases such as methane, which is associated with life on Earth.—
Jacopo Prisco,
CNN Money,
18 Sep. 2025
Adjective
-
Now, a man’s body has been discovered, with indisputable links to the original kidnap.—
Jessica Radloff,
Glamour,
1 Oct. 2025
-
His simple statement that stocks are highly valued is indisputable.—
Geoff Colvin,
Fortune,
30 Sep. 2025
Adjective
-
That is to say, there is no one pure ur-movie, unblemished and incontestable.—
Anthony Lane,
New Yorker,
22 Sep. 2025
-
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
Adjective
-
In this framework, the new recommendations are actively harmful, and not grounded in conclusive research.—
Dr. Sunny Patel,
Time,
2 Oct. 2025
-
The publication also noted that despite there being no conclusive evidence that Assata was directly to blame for the death of Foerster, New Jersey law stated that everyone involved was equally responsible for the murder.—
Chris Barilla,
PEOPLE,
26 Sep. 2025
Adjective
-
The Senate’s authority to confirm or deny the president’s nominees is incontrovertible.—
James B. Speta,
Twin Cities,
16 Sep. 2025
-
The economic case is incontrovertible.—
Priya Oberoi,
Forbes.com,
15 Sep. 2025
Adjective
-
The potential for abuse here, for unfounded and unanswerable accusations, seems obvious.—
Michelle Goldberg,
Mercury News,
6 Sep. 2025
-
Refusing to simply hand the viewer a conclusion, Penn leaves Hackman spinning his boat in the warm Gulf waters, an iconic visual metaphor for the confusion and frustration of his unanswerable riddle — and perhaps of his entire era.—
Christina Newland,
Vulture,
5 Sep. 2025
Adjective
-
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 7 Oct. 2025.
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