1
as in dense
impossible to get through or into
the wall of security people surrounding the rock band was impermeable
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in tight
not allowing penetration (as by gas, liquid, or light)
an impermeable seal on the ancient tomb had preserved the artifacts exceptionally well
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of impermeable
Taxing cruise ships with foreign flags seems like a simple concept, like building an impermeable border wall.
—
Roger Dooley, Forbes, 22 Feb. 2025
The impermeable bottom layer is deep in some areas – close to 600 feet – and shallow in others – like 50 feet.
—Daniel Desrochers, Kansas City Star, 16 Jan. 2025
As Hurricane Milton is expected to bring record-breaking storm surge yet again to the region, the hospital -- located on the bay near downtown Tampa -- is surrounded by the water-impermeable barrier once more.
—Meredith Deliso, ABC News, 9 Oct. 2024
Strong metal clamps replicate the design of the polymer hinges on regular Pelican cases, squeezing the case shut on the gasket to create an impermeable seal.
—Wes Siler, Outside Online, 26 Mar. 2025
See All Example Sentences for impermeable
Roger Dooley, Forbes, 22 Feb. 2025
The impermeable bottom layer is deep in some areas – close to 600 feet – and shallow in others – like 50 feet.
—Daniel Desrochers, Kansas City Star, 16 Jan. 2025
As Hurricane Milton is expected to bring record-breaking storm surge yet again to the region, the hospital -- located on the bay near downtown Tampa -- is surrounded by the water-impermeable barrier once more.
—Meredith Deliso, ABC News, 9 Oct. 2024
Strong metal clamps replicate the design of the polymer hinges on regular Pelican cases, squeezing the case shut on the gasket to create an impermeable seal.
—Wes Siler, Outside Online, 26 Mar. 2025
See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
Adjective
-
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
-
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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The timeline is tight—most growth drivers need to materialize before 2028—but the groundwork is established.—
Trefis Team,
Forbes.com,
27 June 2025
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Powell is in a tight spot because the U.S. rate of inflation is still above 3%.—
Jim Edwards,
Fortune,
26 June 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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Simply lather a thick coating of petroleum jelly onto the scratch.—
Kaitlyn Yarborough,
Southern Living,
21 June 2025
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As thick clouds billowed out of Eyjafjallajökull, the skies over the North Atlantic — one of the world’s busiest aviation routes — fell silent, with air traffic dropping to levels that wouldn’t be seen again until the Covid pandemic a decade later.—
Brad Lendon,
CNN Money,
21 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
-
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
Adjective
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The championship is Oklahoma City’s first since relocating from Seattle in 2008; for the Pacers, close wasn’t good enough for their second straight season with a strong playoff run before falling to the eventual NBA champs.—
USA TODAY,
USA Today,
28 June 2025
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Some of my friends sent them a gift, knowing why they were not invited but three of my close friends didn’t send anything (even a card would have been thoughtful).—
R. Eric Thomas,
Chicago Tribune,
28 June 2025
Adjective
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The tune, a collaboration with Bruno Mars — whose presence surely helped the cut not only become a high-rising win but also a sturdy one — has now spent 34 weeks on the competitive tally.—
Hugh McIntyre,
Forbes.com,
18 June 2025
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For your safety, move to an interior room on the lowest floor of a sturdy building.—
NC Weather Bot,
Charlotte Observer,
17 June 2025
Cite this Entry
“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 2 Jul. 2025.
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