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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2
as in dense
impossible to get through or into
the castle's supposedly impregnable walls
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Recent Examples of impregnable
Once when told that a certain French fortress was impregnable and once when told that his mother-in-law had died.
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Andrew Stuttaford, National Review, 25 Mar. 2024
Inflation is a currency phenomenon, which means that Summers et al are floating non sequiturs rooted in the absurd notion that the U.S. economy is an impregnable island of economic activity, as opposed to an interconnected part of a global whole.
—John Tamny, Forbes, 25 Feb. 2024
Some Wall Street analysts agree with Belloni and his tweet that the fact Netflix’s competitors license content to it is a sign of its impregnable position atop the streaming heap.
—Paolo Confino, Fortune, 7 Jan. 2024
The monster acts with the implacable, impregnable logic of a natural disaster.
—Robert Rubsam, New York Times, 4 Jan. 2024
See all Example Sentences for impregnable 
Andrew Stuttaford, National Review, 25 Mar. 2024
Inflation is a currency phenomenon, which means that Summers et al are floating non sequiturs rooted in the absurd notion that the U.S. economy is an impregnable island of economic activity, as opposed to an interconnected part of a global whole.
—John Tamny, Forbes, 25 Feb. 2024
Some Wall Street analysts agree with Belloni and his tweet that the fact Netflix’s competitors license content to it is a sign of its impregnable position atop the streaming heap.
—Paolo Confino, Fortune, 7 Jan. 2024
The monster acts with the implacable, impregnable logic of a natural disaster.
—Robert Rubsam, New York Times, 4 Jan. 2024
See all Example Sentences for impregnable
Recent Examples of Synonyms for impregnable
Adjective
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Vlasic was asked if the penalty kill felt invincible right now.Scott Powers, The Athletic, 16 Dec. 2024
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Until today, ServiceNow has felt invincible with its ties to Nvidia and its big contract wins.Jim Cramer, CNBC, 13 Dec. 2024
Adjective
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As for roads, dense fog, winter storms and flash floods were snarling traffic across the U.S. In the Pacific Northwest, an atmospheric river was bringing heavy snow and rain to California, Oregon and Washington.Tom Rogers, Newsweek, 26 Dec. 2024
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Limelight then follows standard steelmaking techniques to create a slag of impurities at the top of the brew, allowing dense pure iron to flow out through a channel below.Andrew Rosenblum, Popular Science, 26 Dec. 2024
Adjective
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Any pardons Biden issues should be virtually invulnerable to a court challenge.Ian Millhiser, Vox, 7 Dec. 2018
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Those who’ve faced adversity may feel the pressure to always appear strong or invulnerable, yet pushing yourself too hard can lead to burnout.Marian Evans, Forbes, 5 Dec. 2024
Adjective
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The fame afforded Sacks financial freedom, as well as more opportunities to tell the stories of people whose isolation had previously seemed impenetrable.Michael S. Roth, The Atlantic, 16 Dec. 2024
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When planted in rows, Golden Oakland® Holly makes an impenetrable privacy screen.Kim Toscano, Southern Living, 11 Dec. 2024
Adjective
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Even the most vulnerable patrons of an unforgiving desert can confront tribulation with the command of unconquerable spirits.Yahya Salem, CNN, 6 Aug. 2024
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By contrast, the Tibetan language, which has nothing in common with Mandarin, remains doggedly unconquerable; unlike other aspects of Tibetan life, it has not been tamed, co-opted, or Sinicized.Tenzin Dorjee, Foreign Affairs, 28 Nov. 2023
Adjective
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Two years ago, the U.S. Centers for Disease Control began tracking a sharp rise in cases of extensively drug-resistant (XDR) shigellosis — infections by particular strains of Shigella bacteria that are impervious to most antibiotics.Corinne Purtill, Los Angeles Times, 18 Dec. 2024
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Surface water flooding is especially dangerous for cities with a high proportion of impervious soil coverage and hard surfaces—such as roads and parking lots—that prevent rainwater from being absorbed, increasing the likelihood and impact of flooding.Natalie Donback, TIME, 18 Dec. 2024
Adjective
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And people with disabilities face insurmountable barriers in accessing safe, affordable, inclusive and accessible housing.Sharonda Dillard-Huffman, Baltimore Sun, 10 Dec. 2024
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Fans headed for the exits with about two minutes left in what turned into a blowout as the Flyers surged to an insurmountable 16-point lead and secured the game, which didn’t tip-off until 12:32 a.m.Joe Arruda, Hartford Courant, 28 Nov. 2024
Adjective
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The Jamaica Public Service, the island’s electricity provider, said in a statement late Tuesday that impassable roads were preventing crews from restoring power in some areas.Andrea Rodríguez, Los Angeles Times, 6 Nov. 2024
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Their condominium buildings ended up receiving a foot of water, and many streets still remained underwater and impassable by mid-afternoon on Friday, Sept. 27, as the couple walked four miles to try to retrieve their cars.Diane Herbst, People.com, 27 Sep. 2024
Thesaurus Entries Near impregnable
Cite this Entry
“Impregnable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impregnable. Accessed 31 Dec. 2024.
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