1
as in impervious
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
The discovery could enable large-scale use of impermeable coatings once limited by graphene’s scalability issues.
—
Aamir Khollam, Interesting Engineering, 12 Nov. 2025
The company says the finalized Bio foil provides the full and appropriate level of impermeable barrier protection and odorless performance.
—New Atlas, 9 Oct. 2025
Chocolate brown stripes punctuate a light charcoal gray background, and the low-pile weave made from recycled polyester gives it an impermeable, easy-to-clean surface.
—Julia Harrison, Architectural Digest, 6 Oct. 2025
But simply piling mounds of topsoil on top of hard clay ground can result in an impermeable layer, both to water and roots.
—Andy Wilcox, Better Homes & Gardens, 7 Aug. 2025
See All Example Sentences for impermeable
Aamir Khollam, Interesting Engineering, 12 Nov. 2025
The company says the finalized Bio foil provides the full and appropriate level of impermeable barrier protection and odorless performance.
—New Atlas, 9 Oct. 2025
Chocolate brown stripes punctuate a light charcoal gray background, and the low-pile weave made from recycled polyester gives it an impermeable, easy-to-clean surface.
—Julia Harrison, Architectural Digest, 6 Oct. 2025
But simply piling mounds of topsoil on top of hard clay ground can result in an impermeable layer, both to water and roots.
—Andy Wilcox, Better Homes & Gardens, 7 Aug. 2025
See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
Adjective
-
There are precious few roads, and nothing is impervious to the whims of weather.—
Tribune News Service,
Baltimore Sun,
16 Mar. 2026
-
This plant can grow as tall as eight feet and is impervious to drought.—
Joshua Siskin,
Oc Register,
14 Mar. 2026
Adjective
-
China started restricting tungsten exports just over a year ago, and in December called for tighter limits on sulfuric acid exports.—
Evelyn Cheng,
CNBC,
31 Mar. 2026
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In Saudi Arabia, banks are also dealing with tight liquidity.—
Matthew Martin,
semafor.com,
31 Mar. 2026
Adjective
-
In cases of near-zero visibility due to dense fog, initiate your hazard lights and locate a secure spot, such as a nearby business parking area, to pull over and come to a halt.—
NC Weather Bot,
Charlotte Observer,
31 Mar. 2026
-
Aerix claims the result is a UAV capable of sustained, multidirectional motion—an essential requirement for tracking erratic airborne targets in dense or cluttered environments.—
Jijo Malayil,
Interesting Engineering,
31 Mar. 2026
Adjective
-
Dramatic footage shows flames and thick black smoke billowing from the area around the airport, while firefighters worked to contain the blaze.—
Moriah Thomas,
CNN Money,
28 Mar. 2026
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The crowd remains thick, spanning the width of the street.—
Jenna Ebbers,
Kansas City Star,
28 Mar. 2026
Adjective
-
Nevada County’s admission comes as AI programs are under close watch around the globe for introducing incorrect legal references in cases, yet also increasingly offered as tools to help lawyers and judges research and write their briefs, motions and opinions.—
Sharon Bernstein,
Sacbee.com,
1 Apr. 2026
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Catcher Danny Jansen hit a three-run home run in the seventh inning to bust open a close game, and the Rangers held on for an 8-5 road win over the Baltimore Orioles on Tuesday.—
Jim Barnes,
Fort Worth Star-Telegram,
1 Apr. 2026
Adjective
-
David Benioff wrote 25th Hour (great), Troy (good), and then Stay, this nearly impenetrable psychological thriller that plays out like The Machinist through a David Lynch filter.—
Roxana Hadadi,
Vulture,
20 Mar. 2026
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To regulators, crypto appeared as one impenetrable blur of internet scam.—
Clara Molot,
Vanity Fair,
17 Mar. 2026
Adjective
-
State highways and county roads also became impassable, with government agencies issuing multiple no travel advisories amid blizzard warnings.—
Angela George,
Sioux Falls Argus Leader,
26 Mar. 2026
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Although parked legally, the cars made the route impassable for school buses, plow trucks, fire trucks or ambulances.—
Laura Bauer,
Kansas City Star,
26 Mar. 2026
Adjective
-
The multiple attacks could be a major victory for the jihadis in a city seen as impregnable, despite attackers often targeting troops and villages on the outskirts of the city.—
Haruna Umar,
Los Angeles Times,
17 Mar. 2026
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The multiple attacks could be seen as a major victory for the jihadis in a city seen as impregnable despite the jihadis often targeting troops and villages on the outskirts of the city.—
ABC News,
ABC News,
16 Mar. 2026
Cite this Entry
“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 3 Apr. 2026.
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