as in unquestionable
not capable of being challenged or proved wrong
the contention that there are certain unchallengeable rules governing proper grammar
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of unchallengeable
Californians have been conditioned to consider recycling to be an unchallengeable proposition.
—
Kerry Jackson, Oc Register, 4 Feb. 2026
The lens of the hearing never focused on Robeson, who was seen as only a prop for Robinson’s patriotism, unworthy of rediscovery, especially as the Robinson/Rickey integration story—sports as the pathway to equality—became virtually unchallengeable.
—Literary Hub, 21 Jan. 2026
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
Kerry Jackson, Oc Register, 4 Feb. 2026
The lens of the hearing never focused on Robeson, who was seen as only a prop for Robinson’s patriotism, unworthy of rediscovery, especially as the Robinson/Rickey integration story—sports as the pathway to equality—became virtually unchallengeable.
—Literary Hub, 21 Jan. 2026
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
Recent Examples of Synonyms for unchallengeable
Adjective
-
Growing tensions While his legacy is unquestionable, his departure from Liverpool is perhaps overdue and, like any relationship, there have been blips.—
Ben Church,
CNN Money,
25 Mar. 2026
-
In the eyes of hard-liners, Khamenei stood as the unquestionable authority — below only that of God.—
Lee Keath,
Fortune,
1 Mar. 2026
Adjective
-
The evidence is irrefutable — a pile of drool atop a drenched spot on your pillow.—
Sandee LaMotte,
CNN Money,
10 Mar. 2026
-
Nefarious actors shape elections without leaving irrefutable evidence of ballot manipulation.—
Andrew Latham,
The Conversation,
3 Mar. 2026
Adjective
-
For many, including some of the interviewees in Evans’ film, that shaky minute of 16mm footage is the holy grail, indisputable proof that Bigfoot — aka Sasquatch, Yeti, or the Abominable Snowman — walks the earth.—
Sheri Linden,
HollywoodReporter,
12 Mar. 2026
-
The effectiveness of scientific health is indisputable for the many who benefited from, say, interventions for traumatic injuries.—
Cory Anderson,
STAT,
6 Mar. 2026
Adjective
-
Many experts also remained in denial until evidence of Covid’s lethality and transmissibility became incontestable.—
David Blumenthal,
STAT,
24 Mar. 2026
-
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
Adjective
-
The research isn’t conclusive, however.—
Jackie Flynn Mogensen,
Scientific American,
18 Mar. 2026
-
The broader data is less conclusive on mental health benefits, said West, perhaps because participants get anxious about the programs ending, coupled with the rising cost of living.—
ABC News,
ABC News,
18 Mar. 2026
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
-
Both are also for all purposes motherless boys—Suwa’s mother died and his father survives her, full of an unanswerable grief.—
Literary Hub,
Literary Hub,
12 Mar. 2026
-
Though his World Series moment didn’t occur with the Red Sox, the experience could lend insight into his new organization, which spent 86 years racking up similarly stunning last-second heartbreaks and unanswerable what-ifs.—
Gabrielle Starr,
Boston Herald,
11 Feb. 2026
Adjective
-
This Japandi design will look great in your forever home, too, of course, with its light wash wood and indubitable Donald Judd-ness.—
Julia Harrison,
Architectural Digest,
16 Mar. 2026
-
In 2025, Rebecca Yarros is that genre’s indubitable champion.—
Rebecca Yarros,
Vulture,
1 Dec. 2025
Cite this Entry
“Unchallengeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unchallengeable. Accessed 31 Mar. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
