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
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
-
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
-
In the photo, the orange-brown tiers represent stardust, while small patches represent seemingly vacant zones that indicate the presence of dense foreground filaments of dust that are home to still-forming stars, astronomers said.—
Julia Jacobo,
ABC News,
11 July 2025
Adjective
-
The Moccamaster can hold brewing temperatures within a variance of 4 degrees Celsius and extract coffee within very tight parameters.—
Scott Gilbertson,
Wired News,
9 July 2025
-
This minimizes losses from expired or unsold products and lowers risk by maintaining tighter control over merchandise.—
Expert Panel®,
Forbes.com,
9 July 2025
Adjective
-
And even the mighty NFL isn’t impervious to the ravages of demographic drift, although the league’s absolute deliveries of the under-50 set remain the gold standard.—
Anthony Crupi,
Sportico.com,
11 July 2025
-
The laws of physics are impervious to climate change.—
Evan Bush,
NBC news,
8 July 2025
Adjective
-
Sides of hand-cut fries ($3) were fairly standard, and onion rings ($5) were thick and addictively crunchy.—
Rachel Bernhard,
jsonline.com,
14 July 2025
-
The three-day Tampa conference was thick with criticism of DOJ and disbelief that the president could have let so many people down.—
Shelby Talcott,
semafor.com,
14 July 2025
Adjective
-
Riddle has done that in part by embracing the community that sees her as a way into a complicated and sometimes deliberately impenetrable sport.—
Caoimhe O'Neill,
New York Times,
10 July 2025
-
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
Adjective
-
By this point, the road behind him was impassable, too.—
Rachel Monroe,
New Yorker,
11 July 2025
-
By that point, according to survivor accounts, many evacuation routes had been impassable for hours.—
Zeynep Tufekci,
Mercury News,
10 July 2025
Adjective
-
Evening operations require a delicate balance: maintaining service standards while preparing for close and keeping everyone safe.—
Elie Y. Katz,
Forbes.com,
10 July 2025
-
Typically, the ring bearer is a young boy or girl and is either the couple’s own child, a relative, or a close family friend.—
Shelby Wax,
Vogue,
10 July 2025
Adjective
-
Seek shelter in a sturdy structure until the storm has passed.—
NC Weather Bot,
Charlotte Observer,
13 July 2025
-
Photograph: Kat Merck AmazonBasics Small Packing Cubes for Travel, 4-Piece-Set $20 $14 (30% off) Amazon Not quite as compressive as our top pick, these Amazon Basics cubes offer sturdy mesh windows and durable fabric—a budget-friendly intro to packing cubes.—
Parker Hall,
Wired News,
11 July 2025
Cite this Entry
“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 20 Jul. 2025.
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