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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Recent Examples of impermeable
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
That aquifer is covered by impermeable layers of rock or clay, putting the water in it under high pressure in some locations.
—Claire Osborn, Austin American Statesman, 30 July 2025
The part of Texas that flooded last week is known as Flash Flood Alley because of its impermeable limestone hills and frequent downpours, but these floods were unusually severe for the area.
—Rebecca Hersher, NPR, 7 July 2025
The spongy material is mostly made of air, yet nearly impermeable to both air and liquid.
—Brandee Gruener, Southern Living, 7 May 2025
See All Example Sentences for impermeable
Andy Wilcox, Better Homes & Gardens, 7 Aug. 2025
That aquifer is covered by impermeable layers of rock or clay, putting the water in it under high pressure in some locations.
—Claire Osborn, Austin American Statesman, 30 July 2025
The part of Texas that flooded last week is known as Flash Flood Alley because of its impermeable limestone hills and frequent downpours, but these floods were unusually severe for the area.
—Rebecca Hersher, NPR, 7 July 2025
The spongy material is mostly made of air, yet nearly impermeable to both air and liquid.
—Brandee Gruener, Southern Living, 7 May 2025
See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
Adjective
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But there were strengths here, too, none more than England’s impervious Lazarus complex, that baffling inability to know when one is in a state of emergency.—
Megan Feringa,
New York Times,
26 Oct. 2025
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The assessment by PlanIT Geo also found that only 29% of Pittsburg’s land is suitable for new tree planting, due to impervious surfaces.—
Hema Sivanandam,
Mercury News,
19 Oct. 2025
Adjective
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As an example, Sopo said that in some majority-Hispanic Congressional districts in South Texas, conservative Latinos ran in races with historically tight margins of victory.—
Miami Herald,
Miami Herald,
7 Nov. 2025
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But Charlotte Republicans are now left wondering how supposed tight races ran away from them and what comes next for their beleaguered party.—
Charlotte Observer,
Charlotte Observer,
7 Nov. 2025
Adjective
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In extremely dense fog where visibility is near zero, the best course of action is to first turn on your hazard lights, then simply pull into a safe location such as a parking lot of a local business, and stop.—
CA Weather Bot,
Sacbee.com,
11 Nov. 2025
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The chestnut—nutrient dense, hardy, quietly elegant—is a symbol with global resonance.—
Todd Plummer,
Vogue,
11 Nov. 2025
Adjective
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The thick artificial foliage is pre-lit with warm white LED bulbs spaced through the entire length of the 10-foot piece.—
Kate McGregor,
Architectural Digest,
5 Nov. 2025
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With more than 38,000 gallons of fuel on board the cargo flight bound for Hawaii, the crash created a massive ball of fire – punctuated by smaller explosions from flammable material on the ground – and sent a towering plume of thick black smoke into the sky.—
Karina Tsui,
CNN Money,
5 Nov. 2025
Adjective
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This was a decisive turn away from Hasina’s India-first posture and toward closer alignment with Beijing.—
MUHIB RAHMAN,
Foreign Affairs,
12 Nov. 2025
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Highly acidic foods like pickles and tomatoes will react with the can after an extended period of time, causing both taste and texture changes so pay particularly close attention to expiration dates on these items.—
Patricia Shannon,
Southern Living,
11 Nov. 2025
Adjective
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And in the chaotic months since, clues about Tice’s fate have begun to seep through the walls of Syria’s once-impenetrable prisons and palaces.—
Rob Picheta,
CNN Money,
28 Oct. 2025
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Yes, only two additional albums in 30 years since his 1995 debut, with a 14-year gap between the second and third, but an impenetrable recipe for everyone from Beyoncé to Kendrick Lamar.—
Kevin Powell,
MSNBC Newsweek,
16 Oct. 2025
Adjective
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The heavy snow will make many roads impassable and may produce power outages due to the weight of the snow on tree limbs and power lines.—
NC Weather Bot,
Charlotte Observer,
10 Nov. 2025
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Until the 1950s, Livigno was completely isolated during the winter, when heavy snow would make the roads connecting it to Italy and Switzerland impassable.—
Laura Itzkowitz,
Travel + Leisure,
4 Nov. 2025
Adjective
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Resilience is the key The word ‘resilient’ used to mean impregnable and capable of withstanding all challenges.—
David Parker,
Forbes.com,
31 July 2025
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One of the grandest occasions in golf was in 1930, when the great Bobby Jones won the British Amateur at St. Andrews and then captured the claret jug at Royal Liverpool on his way to winning the Grand Slam of that era — the impregnable quadrilateral, as it was called.—
Doug Ferguson,
Chicago Tribune,
16 July 2025
Cite this Entry
“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 15 Nov. 2025.
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