1
as in invincible
incapable of being defeated, overcome, or subdued
an impregnable fortress that had foiled one invader after another over the centuries
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Antonyms & Near Antonyms
2
as in impervious
impossible to get through or into
the castle's supposedly impregnable walls
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of impregnable
France believed its Maginot Line of fortresses was impregnable – until the Germans simply went around it.
—
New Atlas, 19 Feb. 2026
By now, Bondi’s playbook at these hearings is both familiar and seemingly impregnable.
—Ruth Marcus, New Yorker, 12 Feb. 2026
But their quarterback issues could make those defenses look impregnable.
—Kevin Cusick, Twin Cities, 30 Nov. 2025
OpenAI wasn’t a fortress, wasn’t impregnable.
—Jim Cramer, CNBC, 16 Nov. 2025
See All Example Sentences for impregnable
New Atlas, 19 Feb. 2026
By now, Bondi’s playbook at these hearings is both familiar and seemingly impregnable.
—Ruth Marcus, New Yorker, 12 Feb. 2026
But their quarterback issues could make those defenses look impregnable.
—Kevin Cusick, Twin Cities, 30 Nov. 2025
OpenAI wasn’t a fortress, wasn’t impregnable.
—Jim Cramer, CNBC, 16 Nov. 2025
See All Example Sentences for impregnable
Recent Examples of Synonyms for impregnable
Adjective
-
That was still a sharp commercial comedown for a tentpole that so recently seemed invincible.—
Alison Foreman,
IndieWire,
23 May 2026
-
Bounty hunters facing off, nearly invincible against normal bad guys, but hard-pressed in an even match.—
Erik Kain,
Forbes.com,
22 May 2026
Adjective
-
From a tactical standpoint, the fort is unlikely to deter Hezbollah’s new crop of attack drones, which rely on fiber-optic cables and are impervious to jamming.—
Nabih Bulos,
Los Angeles Times,
1 June 2026
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This proposal involves extremely large impervious surfaces, roofing, pavement, truck courts, loading areas, and supporting infrastructure.—
Sean Krofssik,
Hartford Courant,
27 May 2026
Adjective
-
He-Man has superhuman speed and strength and is invulnerable to most damage.—
Sanat Pai RaikarAll,
Encyclopedia Britannica,
4 May 2026
-
Not even the most powerful American companies are invulnerable to cargo theft.—
Will McCurdy,
PC Magazine,
2 May 2026
Adjective
-
Beto was close to unplayable up front, while James Garner and Dewsbury-Hall buzzed around in midfield.—
Patrick Boyland,
New York Times,
27 May 2026
-
Trump faces increasing pressure to secure a deal that ends the conflict and reopens the Strait of Hormuz after signaling that both sides were close to an agreement.—
Joey Garrison,
USA Today,
27 May 2026
Adjective
-
Ryan Borucki relieved him, the White Sox scored twice more, and the Giants faced an unconquerable deficit as baseball’s lowest-scoring team.—
Cam Inman,
Mercury News,
23 May 2026
-
Big ask here, but this is not an unconquerable field.—
Danny Brewer,
Forbes.com,
12 Mar. 2026
Adjective
-
Among all of Crichton’s books, Sphere is the densest, most effective vehicle of novelistic pleasure.—
Ian Mackenzie,
Literary Hub,
27 May 2026
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Early in its history, cold, dense surface rock would have sunk through hot mantle rock in ways that bear little resemblance to modern plate tectonics.—
Scott K. Johnson,
ArsTechnica,
26 May 2026
Adjective
-
The 24-time grand slam champion held a nearly insurmountable record of 289-1 when leading by two sets to none in majors – according to the TNT broadcast – and Fonseca having a mountain to climb may be an understatement.—
Thomas Schlachter,
CNN Money,
29 May 2026
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In a weak American League, Detroit’s five-game deficit in the wild-card standings is not insurmountable.—
Cody Stavenhagen,
New York Times,
26 May 2026
Adjective
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The Thunder’s perimeter defense sometimes feels impenetrable and is anchored on the back line by Chet Holmgren, one of the best rim protectors in basketball.—
James L. Edwards III,
New York Times,
27 May 2026
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Achilles grew up to be the greatest warrior of his age, his armor impenetrable, his enemies routed.—
Nick Lichtenberg,
Fortune,
26 May 2026
Cite this Entry
“Impregnable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impregnable. Accessed 3 Jun. 2026.
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