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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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
-
With concerns growing about a global energy crisis, an Iranian official said Tehran had no intention of relinquishing its tight grip on shipping through the Strait of Hormuz, a crucial waterway for oil.—
Arkansas Online,
Arkansas Online,
18 Mar. 2026
-
There was no immediate confirmation from Iran, where little information has been coming out due to internet outages, round-the-clock airstrikes and tight restrictions on journalists.—
Jon Gambrell,
Chicago Tribune,
17 Mar. 2026
Adjective
-
But instead of creating a white material as intended, Jie produced dense, transparent films.—
J. Carson Meredith,
The Conversation,
17 Mar. 2026
-
The stars stretch between Fourth and Sixth streets, appearing amid the dense foot traffic typical of SXSW.—
Staff Photographer,
Austin American Statesman,
17 Mar. 2026
Adjective
-
Videos and photos from the scene showed thick gray smoke billowing from the complex and some workers jumping from a building belonging to Anjun Industrial.—
Arkansas Online,
Arkansas Online,
22 Mar. 2026
-
In the hands of a sandwich master, these things can come from elsewhere—in the Vegitalian, thin slabs of fresh mozzarella and, of all things, a thick layer of roasted sweet-potato slices.—
Helen Rosner,
New Yorker,
22 Mar. 2026
Adjective
-
With all that noted for context, here’s a closer look at the bottom line of the film businesses of Hollywood titans during the calendar year 2025.—
Georg Szalai,
HollywoodReporter,
17 Mar. 2026
-
Prager was deeply interested in the intricacies of the growing process, as well, sometimes spending weeks in the Colombian mountains living with the indigenous tribes that grew his weed and becoming close friends with his Colombian contacts that moved the product onto his boats.—
Jack Crosbie,
Rolling Stone,
17 Mar. 2026
Adjective
-
To regulators, crypto appeared as one impenetrable blur of internet scam.—
Clara Molot,
Vanity Fair,
17 Mar. 2026
-
Quickly, everyone form an impenetrable mass in front of the four feet of bar while the solitary bartender struggles to hear anyone’s order!—
Literary Hub,
Literary Hub,
13 Mar. 2026
Adjective
-
Successive punches of snow and wind were impacting the eastern half of the United States on Monday as severe weather swept across much of the nation, making roads impassable in the Upper Midwest and canceling more than 2,000 flights nationwide.—
ABC News,
ABC News,
16 Mar. 2026
-
The Michigan State Police, Seventh District, said Monday morning that some roads in the Cheboygan, Gaylord and Alpena areas are impassable and Alpena County is experiencing power outages.—
Paula Wethington,
CBS News,
16 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
-
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 24 Mar. 2026.
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