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 dense
impossible to get through or into
the castle's supposedly impregnable walls
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Example Sentences
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Recent Examples of impregnable
There was no impregnable IP, technology, or secret Coca-Cola ingredient.
—
Judah Taub, Fortune, 22 Oct. 2024
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
His party lost a majority of seats in Uttar Pradesh, India’s largest state, once considered an impregnable fortress for his brand of Hindu nationalism and identity politics.
—Pratap Bhanu Mehta, Foreign Affairs, 14 June 2024
Once when told that a certain French fortress was impregnable and once when told that his mother-in-law had died.
—Andrew Stuttaford, National Review, 25 Mar. 2024
See All Example Sentences for impregnable
Judah Taub, Fortune, 22 Oct. 2024
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
His party lost a majority of seats in Uttar Pradesh, India’s largest state, once considered an impregnable fortress for his brand of Hindu nationalism and identity politics.
—Pratap Bhanu Mehta, Foreign Affairs, 14 June 2024
Once when told that a certain French fortress was impregnable and once when told that his mother-in-law had died.
—Andrew Stuttaford, National Review, 25 Mar. 2024
See All Example Sentences for impregnable
Recent Examples of Synonyms for impregnable
Adjective
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He's converted all 11 save opportunities this year, and his addition to the Cubs' bullpen would make Craig Counsell feel invincible in the playoffs.—
Zach Pressnell,
MSNBC Newsweek,
29 June 2025
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The Bundesliga player of the season for Bayer Leverkusen’s invincible 2023-24 campaign started out at Koln’s academy in 2010, having grown up in Pulheim, a town located eight miles (13km) from the city.—
Chris Weatherspoon,
New York Times,
21 June 2025
Adjective
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From dense, intensely aromatic reds to delicate whites, from sparkling to still, from sweet to fortified, there is a wine here that will suit any palate.—
Joseph V Micallef,
Forbes.com,
18 June 2025
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In addition, most microlensing efforts are recorded at the Galactic Center -- the densest part of the Milky Way, Edita Stonkutė, an associate professor of astronomy at Vilnius University, said in a statement.—
Julia Jacobo,
ABC News,
18 June 2025
Adjective
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Short of a ground attack with US troops included, these parts of Iran’s nuclear network are to some degree invulnerable.—
Melik Kaylan,
Forbes.com,
16 June 2025
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While no lock is completely invulnerable, the X1 forces a thief to spend more time and make more noise, both major deterrents in real-world scenarios.—
Josh Patterson,
Outside Online,
4 June 2025
Adjective
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Built inside a mountain some 300 feet underground and reinforced by layers of concrete, the plant, which is the most likely target of a potential American strike, is impenetrable by any bomb except the GBU-57 Massive Ordnance Penetrator (MOP).—
Adeola Adeosun,
MSNBC Newsweek,
21 June 2025
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This must be key to Trump’s impenetrable calculations.—
Nick Paton Walsh,
CNN Money,
19 June 2025
Adjective
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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
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The Latin word Invictus means unconquerable or undefeated.—
Lissete Lanuza Sáenz,
StyleCaster,
18 Apr. 2025
Adjective
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Urban heat islands are areas within cities that are significantly warmer than the surrounding areas, and this is primarily due to the replacement of natural surfaces with impervious materials like pavement and buildings.—
Stephen Underwood,
Hartford Courant,
16 June 2025
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These include the claim that children are virtually impervious to COVID, which has been refuted by the injury and death toll among children.—
Michael Hiltzik,
Los Angeles Times,
5 June 2025
Adjective
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These initial start-up challenges are not insurmountable, though.—
Frederik Gregaard,
Forbes.com,
23 June 2025
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But by then, the Twins were in a hole that would prove to be insurmountable.—
Betsy Helfand,
Twin Cities,
21 June 2025
Adjective
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Nothing is truly dead until lawmakers adjourn for the last time, and proposals can always be revived through amendments, but the lack of action on the bill represents a major — and likely impassable — hurdle.—
Eleanor Dearman,
Fort Worth Star-Telegram,
16 May 2025
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The driveway for Bower Apartments becomes inundated with several feet of water, and is likely impassable.—
NC Weather Bot,
Charlotte Observer,
13 May 2025
Cite this Entry
“Impregnable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impregnable. Accessed 2 Jul. 2025.
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