1
as in dense
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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Example Sentences
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Recent Examples of impermeable
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
Taxing cruise ships with foreign flags seems like a simple concept, like building an impermeable border wall.
—Roger Dooley, Forbes, 22 Feb. 2025
The impermeable bottom layer is deep in some areas – close to 600 feet – and shallow in others – like 50 feet.
—Daniel Desrochers, Kansas City Star, 16 Jan. 2025
As Hurricane Milton is expected to bring record-breaking storm surge yet again to the region, the hospital -- located on the bay near downtown Tampa -- is surrounded by the water-impermeable barrier once more.
—Meredith Deliso, ABC News, 9 Oct. 2024
See All Example Sentences for impermeable
Ari Caramanica, The Conversation, 8 Apr. 2025
Taxing cruise ships with foreign flags seems like a simple concept, like building an impermeable border wall.
—Roger Dooley, Forbes, 22 Feb. 2025
The impermeable bottom layer is deep in some areas – close to 600 feet – and shallow in others – like 50 feet.
—Daniel Desrochers, Kansas City Star, 16 Jan. 2025
As Hurricane Milton is expected to bring record-breaking storm surge yet again to the region, the hospital -- located on the bay near downtown Tampa -- is surrounded by the water-impermeable barrier once more.
—Meredith Deliso, ABC News, 9 Oct. 2024
See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
Adjective
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Where the Earth has a dense atmosphere, abundant water and life, Mars is a desiccated, lifeless world where even the prospects of finding fossil bacteria are a long shot.—
New Atlas,
New Atlas,
12 July 2025
-
On Friday at 6:54 a.m. a dense fog advisory was issued by the NWS Blacksburg VA in effect until 9 a.m.—
NC Weather Bot,
Charlotte Observer,
11 July 2025
Adjective
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Panda flipped this model, embedding itself directly in the grower network and building tight, regional supply chains.—
Kasi Martin,
Sourcing Journal,
9 July 2025
-
Rodman pulled her hair back into a tight bun and accessorized with delicate pieces of jewelry, including earrings, bracelets and rings.—
Julia Teti,
Footwear News,
9 July 2025
Adjective
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The code also would set permeability requirements and expand the definition of artificial turf to include turf that is not 100% impervious.—
Pili Saravia,
Austin American Statesman,
2 July 2025
-
The data further reveal that Latino neighborhoods often have more impervious surfaces and older housing stock lacking modern cooling systems, both of which compound the risks of heat exposure.—
Marcos Magaña,
Los Angeles Times,
24 June 2025
Adjective
-
Politicians in the state said this was because of a loophole in the original bill that allowed the sale of thicker, reusable plastic bags at the checkout stand.—
Elizabeth Weise,
USA Today,
30 June 2025
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Still the aftertaste of raspberry filling clings to her soft palate, as thick and heady and floral as menstrual blood.—
Carly Tagen-Dye,
People.com,
30 June 2025
Adjective
-
When selecting a provider, organizations should remember to look for one that offers robust data protection offerings that ensure the storage sets are impenetrable.—
Dave Friend,
Forbes.com,
27 June 2025
-
Built inside a mountain some 300 feet underground and reinforced by layers of concrete, the plant, which is the most likely target of a potential American strike, is impenetrable by any bomb except the GBU-57 Massive Ordnance Penetrator (MOP).—
Adeola Adeosun,
MSNBC Newsweek,
21 June 2025
Adjective
-
Explorers had been searching for a faster trade link between Europe and Asia since the 15th century, either failing to realize or ignoring the fact that inclement weather and ice would render the route impassable.—
Meilan Solly,
Smithsonian Magazine,
19 May 2025
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Nothing is truly dead until lawmakers adjourn for the last time, and proposals can always be revived through amendments, but the lack of action on the bill represents a major — and likely impassable — hurdle.—
Eleanor Dearman,
Fort Worth Star-Telegram,
16 May 2025
Adjective
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The figure surpasses that of the closest rival, China, which had 317 companies represented.—
Diana Leyva,
The Tennessean,
10 July 2025
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But a closer read shows the linguistic dance that big companies are engaged in.—
Liz Hoffman,
semafor.com,
10 July 2025
Adjective
-
The Gritti’s dock-manager to Grazer’s left, foreground right in the shot, may be suspicious that his sturdy right elbow, offered for support during that parlous little leap from land to sea, is being roundly ignored.—
Guy Martin,
Forbes.com,
1 July 2025
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Some Outdoor Furniture Although sturdy plastic, metal, or resin outdoor furniture is fine to pressure wash, pieces crafted from natural materials, such as wicker and teak, are much too delicate.—
Mary Cornetta,
Better Homes & Gardens,
29 June 2025
Cite this Entry
“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 16 Jul. 2025.
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