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
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
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
See All Example Sentences for impermeable
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
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
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
-
Organizers now hold the Israeli gathering at undisclosed venues and under tight security, broadcasting to multiple sites for those who wish to participate remotely.—
Tal Shalev,
CNN Money,
21 Apr. 2026
-
Kevin May, a Delta A350 captain who is directly involved with the GEESE project, compares the flight pattern to cycling in tight packs.—
Megan Wollerton,
Condé Nast Traveler,
21 Apr. 2026
Adjective
-
The 5,000-square-foot store and gallery will benefit from the street’s dense foot traffic and its proximity to the Museum of Contemporary Art and other cultural institutions.—
Brian J. Rogal,
Chicago Tribune,
21 Apr. 2026
-
Mussels, for instance, create strong underwater adhesives and fibers through dense protein droplets.—
Alexandra Harrell,
Footwear News,
20 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
-
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
-
After entering the game tied at 3 in the ninth, Mets closer Devin Williams allowed two runs in a disastrous final frame to fall to the Twins 5-3 and record their 12th loss in a row, their longest streak since 2002.—
James O'Connell,
New York Daily News,
22 Apr. 2026
-
Two Southwest Airlines jets got dangerously close near Nashville on Saturday, triggering collision alarms.—
Aaron Cooper,
CNN Money,
21 Apr. 2026
Adjective
-
This was one of the city's most impenetrable buildings, surrounded by armed guards, made to look uninviting and unappealing.—
Condé Nast,
Condé Nast Traveler,
23 Apr. 2026
-
Clearly, Villeneuve knows how to turn an impenetrable and famously difficult literary material into something truly cinematic and sweeping.—
Brent Lang,
Variety,
15 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 28 Apr. 2026.
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