1
as in impervious
impossible to get through or into
the wall of security people surrounding the rock band was impermeable
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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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Example Sentences
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Recent Examples of impermeable
My father’s 1930s interviews tell stories of couples who defied Chicago’s seemingly impermeable color line.
—
Dorothy Roberts, Time, 13 Feb. 2026
Driveway materials can be impermeable or permeable—so traditional concrete and asphalt, or a pervious solution that allows rainwater to pass through.
—Alexandra Kelly, Martha Stewart, 9 Feb. 2026
The impermeable seed coat strategy generally helps survival of the species by making sure all of a season’s crop don’t germinate in the same year.
—Paul Cappiello, Louisville Courier Journal, 21 Nov. 2025
The discovery could enable large-scale use of impermeable coatings once limited by graphene’s scalability issues.
—Aamir Khollam, Interesting Engineering, 12 Nov. 2025
See All Example Sentences for impermeable
Dorothy Roberts, Time, 13 Feb. 2026
Driveway materials can be impermeable or permeable—so traditional concrete and asphalt, or a pervious solution that allows rainwater to pass through.
—Alexandra Kelly, Martha Stewart, 9 Feb. 2026
The impermeable seed coat strategy generally helps survival of the species by making sure all of a season’s crop don’t germinate in the same year.
—Paul Cappiello, Louisville Courier Journal, 21 Nov. 2025
The discovery could enable large-scale use of impermeable coatings once limited by graphene’s scalability issues.
—Aamir Khollam, Interesting Engineering, 12 Nov. 2025
See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
Adjective
-
In the century-plus since its grounds were largely closed to the public, dozens of events are evidence that even the White House complex is not impervious to intrusion.—
Meg Kinnard,
Chicago Tribune,
26 Apr. 2026
-
There are precious few roads, and nothing is impervious to the whims of weather.—
Tribune News Service,
Baltimore Sun,
16 Mar. 2026
Adjective
-
The Bruins managed to keep it tight through the end of the first, with the Sabres taking that 1-0 lead into the first intermission.—
Matt Reigle OutKick,
FOXNews.com,
29 Apr. 2026
-
In Illinois, Deppert says rising energy demand is feeding into already tight margins for farmers.—
Jonathan M. Gitlin,
ArsTechnica,
28 Apr. 2026
Adjective
-
Eating avocado or almond butter on toast offers several benefits, as both are nutrient-dense, with almond butter slightly healthier than avocado per serving.—
Angelica Bottaro,
Verywell Health,
28 Apr. 2026
-
The most lasting albums were built on the tradition of musique concrète, leading to dense, mesmerizing collages.—
Joshua Minsoo Kim,
Pitchfork,
28 Apr. 2026
Adjective
-
Across the street, through a thick tangle of forest, the Khodymchuks’ building stood tall and gray in the snow.—
Lizzie Johnson,
New Yorker,
25 Apr. 2026
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Not only does the material ensure comfort and support, but the unique design, with thick straps that curve to the exact shape of my arches and a cupped heel, creates a glove-like fit that hugs my feet.—
Rachel Trujillo,
PEOPLE,
25 Apr. 2026
Adjective
-
Because the Celtics, provided they close-out the 76ers, have the kind of shooters the Hawks don’t.—
Kristian Winfield,
New York Daily News,
29 Apr. 2026
-
Qatar could deepen its already close defense ties to Turkey, and China, which is close to Iran, could play a greater diplomatic role.—
Sudarsan Raghavan,
New Yorker,
28 Apr. 2026
Adjective
-
Nate, on the other hand, just needed to show up in something simple but elevated (while honoring Jacob Elordi’s impenetrable Bottega Veneta contract), so he’s styled in a custom Bottega Veneta tuxedo.—
Zoe Papelis,
Vulture,
27 Apr. 2026
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But the war has also shown that missile defenses are not impenetrable, with at least seven US service members killed by hostile action.—
Stephen Clark,
ArsTechnica,
25 Apr. 2026
Adjective
-
In Aurora, the Prairie Path was flooded and impassible between Route 25 and Illinois Avenue, according to the park district’s news release on Friday.—
Aurora Beacon-News,
Chicago Tribune,
24 Apr. 2026
-
Several streets have been left impassable with water deep enough to cover car bumpers and get inside people's homes.—
Noel Brennan,
CBS News,
20 Apr. 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
-
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 1 May. 2026.
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