1
as in dense
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
Surface treatments can help make paper—which naturally sops up moisture from the air that could affect the device built on top—relatively impermeable.
—
IEEE Spectrum, 29 Jan. 2013
Pepe has been Portugal’s bedrock for almost two decades, a scratching, impermeable presence who won 141 caps for his country, and was central to their first major trophy at Euro 2016.
—Jacob Whitehead, The Athletic, 8 Aug. 2024
Clay deposits, forming an impermeable layer, result in waterlogged soil.
—David Bressan, Forbes, 31 Oct. 2024
There is a retention pond to capture heavy rain, minimum impermeable surfaces, and any runoff is directed to trees and plants.
—Jennifer Castenson, Forbes, 22 Oct. 2024
See All Example Sentences for impermeable
IEEE Spectrum, 29 Jan. 2013
Pepe has been Portugal’s bedrock for almost two decades, a scratching, impermeable presence who won 141 caps for his country, and was central to their first major trophy at Euro 2016.
—Jacob Whitehead, The Athletic, 8 Aug. 2024
Clay deposits, forming an impermeable layer, result in waterlogged soil.
—David Bressan, Forbes, 31 Oct. 2024
There is a retention pond to capture heavy rain, minimum impermeable surfaces, and any runoff is directed to trees and plants.
—Jennifer Castenson, Forbes, 22 Oct. 2024
See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
Adjective
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Select plants with dense habits and thick cover to outcompete weeds that germinate in these border plantings.—
Kim Toscano,
Southern Living,
5 Apr. 2025
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Behind every large language model or real-time inference engine lies a dense web of data centers, chips, storage, and cooling infrastructure.—
Jemma Green,
Forbes.com,
4 Apr. 2025
Adjective
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The Grizzlies, which entered with losses in seven of their last eight games and recently made a coaching change, are in a tight race in the Western Conference to avoid the NBA’s play-in tournament.—
Anthony Chiang,
Miami Herald,
4 Apr. 2025
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Her hair was pulled back into a tight chignon with a few strands of wavy hair to frame her face.—
Julia Teti,
Footwear News,
4 Apr. 2025
Adjective
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But these concepts are not, on their own, impervious to challenge.—
Michael Peregrine,
Chicago Tribune,
14 Mar. 2025
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Remember, Nathan isn’t strong, just impervious to pain.—
Peter Debruge,
Variety,
8 Mar. 2025
Adjective
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Twangy bass lines thick enough to saw down a redwood tree are shredded with shivers of electric guitar to create a blues sound that cuts a hole straight through the decades.—
David Ehrlich,
IndieWire,
10 Apr. 2025
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This beautiful Easter garland, on sale for $79.99 at Wayfair, is opulent and thick with twigs and pastel eggs that run throughout.—
Nora Colomer,
FOXNews.com,
10 Apr. 2025
Adjective
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In this archetype, the leader is a stoic force—strong, steady, and impenetrable.—
Julian Hayes II,
Forbes,
24 Mar. 2025
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His manifesto, dismissed in the 1990s as impenetrable, is now the subject of YouTube videos drawing millions of views apiece.—
Charles Homans,
New York Times,
22 Mar. 2025
Adjective
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So many roads across Kentucky were impassable due to flooding over the weekend that the state ran out of road-closing barriers, the Hardin County sheriff said.—
Mary Gilbert,
CNN Money,
7 Apr. 2025
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Hundreds of Kentucky roads across the state were impassable because of floodwaters, downed trees or mud and rock slides.—
Bruce Schreiner and Obed Lamy,
Los Angeles Times,
6 Apr. 2025
Adjective
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There are several international destinations where pickpocketing is extremely common, so having all of my essentials close is a priority.—
Jordyn Burrell,
Travel + Leisure,
6 Apr. 2025
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To view the latest road closures in Benton County, click here: Benton County Unincorporated Road Closures Map This map will be updated throughout the day as crews close and open roads, according to the release.—
NWA Democrat-Gazette,
Arkansas Online,
5 Apr. 2025
Adjective
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It’s built from a sturdy metal base with a solid wood and plywood frame and has a swivel design that rotates 360 degrees.—
Megan Schaltegger,
People.com,
9 Apr. 2025
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In addition to the missing sturdy bollards, which were under repair, the city’s portable steel barriers were in the down position during New Year’s celebrations, CNN previously reported.—
Emma Tucker,
CNN Money,
8 Apr. 2025
Cite this Entry
“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 14 Apr. 2025.
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