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
The spongy material is mostly made of air, yet nearly impermeable to both air and liquid.
—
Brandee Gruener, Southern Living, 7 May 2025
Given the area’s especially hard, impermeable soil and the high cost of installing private wastewater systems, many residents have resorted to straight piping to deal with human wastewater.
—Curtis Bunn, NBC news, 1 May 2025
What if the girls all band together and reject me like an impermeable cellular membrane, keeping me out, unable to penetrate their circle of friendship?
—Michael Nied, People.com, 28 Apr. 2025
Achieving that often meant forgoing impermeable materials and permanent designs, which stands in stark contrast to the way modern-day water management works are constructed.
—Ari Caramanica, The Conversation, 8 Apr. 2025
See All Example Sentences for impermeable
Brandee Gruener, Southern Living, 7 May 2025
Given the area’s especially hard, impermeable soil and the high cost of installing private wastewater systems, many residents have resorted to straight piping to deal with human wastewater.
—Curtis Bunn, NBC news, 1 May 2025
What if the girls all band together and reject me like an impermeable cellular membrane, keeping me out, unable to penetrate their circle of friendship?
—Michael Nied, People.com, 28 Apr. 2025
Achieving that often meant forgoing impermeable materials and permanent designs, which stands in stark contrast to the way modern-day water management works are constructed.
—Ari Caramanica, The Conversation, 8 Apr. 2025
See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
Adjective
-
Goldens typically have longer, wavier coats, while Labs have shorter, dense double coats.—
Lydia Patrick,
MSNBC Newsweek,
9 Sep. 2025
-
Available in just about every color of the rainbow, the flower heads range from tight buttons and dense domes to soft, feathery blooms.—
Kim Toscano,
Southern Living,
8 Sep. 2025
Adjective
-
American Airlines passengers who have tight connections to make could benefit from a new tool that was just introduced in Phoenix.—
Michael Salerno,
AZCentral.com,
5 Sep. 2025
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Rising prices, high rates, and economic uncertainty are combining to keep many aspiring homeowners on the sidelines, while those looking for homes contend with intense competition and tight supply.—
Nick Lichtenberg,
Fortune,
5 Sep. 2025
Adjective
-
Various groups develop impervious boundaries, neutralizing the effectiveness of people who have to interact across them.—
Carol Kinsey Goman,
Forbes.com,
25 Aug. 2025
-
Roads, sidewalks, parking lots and even rooftops create more impervious surfaces where water falls and can't be absorbed into the ground.—
Laura Schulte,
jsonline.com,
15 Aug. 2025
Adjective
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Because of that, thick fire walls were installed throughout the plant's buildings.—
Eileen Falkenberg-Hull,
MSNBC Newsweek,
4 Sep. 2025
-
The air was damp and listless and the heat was something to wade through, thick as molasses.—
Literary Hub,
Literary Hub,
3 Sep. 2025
Adjective
-
This is all meant to be impenetrable to outsiders, which is one reason for the confusion that follows shootings such as the one in Minneapolis.—
Charlie Warzel,
The Atlantic,
4 Sep. 2025
-
Yet, across the water, a seemingly impenetrable wall of the invasive plants sways in the wind, several feet tall.—
Adriana Pérez,
Chicago Tribune,
31 Aug. 2025
Adjective
-
Idaho 21 near Stanley is back open after a mudslide made a nearly 12-mile stretch of the road impassable after heavy rains Tuesday.—
Shannon Tyler,
Idaho Statesman,
29 Aug. 2025
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The National Hurricane Center has warned that roads in the low-lying barrier islands will become impassable, with powerful waves of 15 to 20 feet crashing ashore.—
Dinah Voyles Pulver,
USA Today,
22 Aug. 2025
Adjective
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Looking back at Charlotte’s recent FCS opponents, dating back to 2021, the 49ers haven’t won the turnover battle in any of the four matchups, resulting in uncomfortably close games and even a lopsided loss to William & Mary in 2022.—
Hunter Bailey,
Charlotte Observer,
10 Sep. 2025
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As Vevo’s Senior Manager of Talent Booking, Cynthia Todd emphasized the close partnership and trust that goes into making opportunities like these special performances come together in Live From Vevo Studios.—
Jeff Benjamin,
Forbes.com,
10 Sep. 2025
Adjective
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The sturdy steel frame holds up to 650 pounds, while the insulated cup holders cool and keep drinks within reach.—
Francesca Krempa,
Travel + Leisure,
8 Sep. 2025
-
If possible, drive to a nearby sturdy building.—
CA Weather Bot,
Sacbee.com,
8 Sep. 2025
Cite this Entry
“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 10 Sep. 2025.
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