1
as in invincible
incapable of being defeated, overcome, or subdued
an impregnable fortress that had foiled one invader after another over the centuries
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in dense
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
As a result, homeowners and developers are reconsidering their approach to luxury living, emphasizing fire-resistant materials, impregnable landscaping, and cutting-edge smart-home technologies.
—
Abby Montanez, Robb Report, 6 July 2025
Japanese airpower destroyed supposedly impregnable British battle cruisers in the Pacific at the outset of World War II.
—Michael C. Horowitz, Foreign Affairs, 4 July 2025
Something technical would surely have been appropriate: Which programming language is most vulnerable, which most impregnable?
—Literary Hub, 1 July 2025
Superstar Harmanpreet Kaur's unbelievable 171 not out that destroyed an impregnable Australia in a remarkable semi-final upset was seen as a turning point.
—Tristan Lavalette, Forbes, 15 Oct. 2024
See All Example Sentences for impregnable
Abby Montanez, Robb Report, 6 July 2025
Japanese airpower destroyed supposedly impregnable British battle cruisers in the Pacific at the outset of World War II.
—Michael C. Horowitz, Foreign Affairs, 4 July 2025
Something technical would surely have been appropriate: Which programming language is most vulnerable, which most impregnable?
—Literary Hub, 1 July 2025
Superstar Harmanpreet Kaur's unbelievable 171 not out that destroyed an impregnable Australia in a remarkable semi-final upset was seen as a turning point.
—Tristan Lavalette, Forbes, 15 Oct. 2024
See All Example Sentences for impregnable
Recent Examples of Synonyms for impregnable
Adjective
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Safdie’s unabashed desire to plumb a seeming invincible figure’s decline made Kerr a wise choice for a subject, but also a somewhat bold one.—
David Sims,
The Atlantic,
9 Oct. 2025
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The godfather of modern West Indian fast bowling shakes his head slowly, having been reminded what happened the last time his once proud and near-invincible team played Test cricket.—
Paul Newman,
New York Times,
1 Oct. 2025
Adjective
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Have a Veggie and Bean Breakfast Hash Mixing potatoes, bell pepper, spinach, zucchini, mushrooms, and black beans into a fiber-rich breakfast hash is a colorful and nutrient-dense way to start your day.—
Morgan Pearson,
Verywell Health,
21 Oct. 2025
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The confounding discovery of a human femur has created a mystery in the dense woods of rural North Carolina.—
Mark Price,
Charlotte Observer,
21 Oct. 2025
Adjective
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Even at his Conn Smythe Trophy-winning peak, Toews was not invulnerable.—
Murat Ates,
New York Times,
8 Oct. 2025
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But the havoc in Europe is a reminder that our thriving international network is not invulnerable.—
Maureen O'Hare,
CNN Money,
27 Sep. 2025
Adjective
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Yes, only two additional albums in 30 years since his 1995 debut, with a 14-year gap between the second and third, but an impenetrable recipe for everyone from Beyoncé to Kendrick Lamar.—
Kevin Powell,
MSNBC Newsweek,
16 Oct. 2025
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For instance, in The Trial, Kafka looks at alienation vis-à-vis a faceless, impenetrable bureaucracy.—
Big Think,
Big Think,
14 Oct. 2025
Adjective
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The seemingly unconquerable fig butterwort (Ficaria verna) invades lowland valleys where seasonal floods carry little broken off bits downstream to sprout anywhere and everywhere.—
Paul Cappiello,
The Courier-Journal,
15 Aug. 2025
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Mountains as towering, imposing and seemingly unconquerable landscapes have been metaphorically linked to power and challenge.—
Jenny Hall,
CNN Money,
14 May 2025
Adjective
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The assessment by PlanIT Geo also found that only 29% of Pittsburg’s land is suitable for new tree planting, due to impervious surfaces.—
Hema Sivanandam,
Mercury News,
19 Oct. 2025
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But that doesn't mean Davis is impervious to economic headwinds.—
Laura Hackett,
NPR,
26 Sep. 2025
Adjective
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The game was tied 7-7 at halftime, at which point King led four consecutive scoring drives of at least 63 yards to build an insurmountable 27-10 lead.—
Stewart Mandel,
New York Times,
19 Oct. 2025
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Having waited 24 years for such a dramatic postseason homer, Seattle fans were treated to another just moments later when Suárez’s heroics gave the Mariners an insurmountable lead.—
Jamie Barton,
CNN Money,
18 Oct. 2025
Adjective
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Each loop of the driveway produced an impassable snowdrift in winter, but by then Carol and Mike were on the coast, watching waving kelp fronds from their living room.—
Literary Hub,
Literary Hub,
17 Oct. 2025
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If enough satellites are in orbit, this debris could set off a chain reaction, rendering the environment around Earth practically impassable.—
Big Think,
Big Think,
15 Oct. 2025
Cite this Entry
“Impregnable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impregnable. Accessed 23 Oct. 2025.
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