1
as in impervious
impossible to get through or into
the wall of security people surrounding the rock band was impermeable
Synonyms & Similar Words
Relevance
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
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of impermeable
The company says the finalized Bio foil provides the full and appropriate level of impermeable barrier protection and odorless performance.
—
New Atlas, 9 Oct. 2025
Chocolate brown stripes punctuate a light charcoal gray background, and the low-pile weave made from recycled polyester gives it an impermeable, easy-to-clean surface.
—Julia Harrison, Architectural Digest, 6 Oct. 2025
Which means the bigger the economy, the greater the means to erect an impermeable national defense system.
—John Tamny, Forbes.com, 12 Sep. 2025
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
See All Example Sentences for impermeable
New Atlas, 9 Oct. 2025
Chocolate brown stripes punctuate a light charcoal gray background, and the low-pile weave made from recycled polyester gives it an impermeable, easy-to-clean surface.
—Julia Harrison, Architectural Digest, 6 Oct. 2025
Which means the bigger the economy, the greater the means to erect an impermeable national defense system.
—John Tamny, Forbes.com, 12 Sep. 2025
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
See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
Adjective
-
Flooding is exacerbated by increasing the impervious area.—
Chicago Tribune,
Chicago Tribune,
2 Mar. 2026
-
But as the cold persisted into the next week and then the one following, a new test emerged, one more impervious to a communications strategy.—
Molly Fischer,
New Yorker,
19 Feb. 2026
Adjective
-
The elevator, though fully operational, is comically small—tight even for guests with robust suitcases.—
Condé Nast,
Condé Nast Traveler,
25 Feb. 2026
-
With Washington already debating tighter restrictions on exporting AI chips and cloud services to China, Anthropic’s allegations are likely to feed calls for new guardrails—while giving critics one more chance to note the uncomfortable symmetry at the heart of modern AI.—
Nick Lichtenberg,
Fortune,
24 Feb. 2026
Adjective
-
Regular attendees noticed the effect of a denser Fall/Winter schedule compared to previous seasons, and there were multiple dinners and cocktail events taking place each night.—
Maliha Shoaib,
Vogue,
24 Feb. 2026
-
My calves turned into dense, heavy cinder blocks.—
Dimity McDowell,
Time,
24 Feb. 2026
Adjective
-
Hours later, an explosion near the airport sent a thick plume of black smoke into the air – part of a fresh wave of Iranian strikes across the Middle East on Sunday following the death of Iran’s supreme leader in US-Israeli strikes.—
Laura Sharman,
CNN Money,
1 Mar. 2026
-
The luxurious touch of velvet elevates any look, while the thick straps and flat sole give it a practical element.—
Ana Serrano,
Glamour,
28 Feb. 2026
Adjective
-
Visiting boats moor in the bay but keep to the far side, close enough to admire and distant enough to ignore.—
Condé Nast,
Condé Nast Traveler,
25 Feb. 2026
-
The senior got the final two outs, which kept the score close enough for the Hawks to tie the score in their half of the fifth inning.—
Lou Ponsi,
Oc Register,
25 Feb. 2026
Adjective
-
Young people are currently shut out of wealth concentration and face a nearly impenetrable housing market, heavily evidenced by the fact that the average age of a first-time homebuyer has now hit 40 years old.—
Nick Lichtenberg,
Fortune,
26 Feb. 2026
-
Make their books so impenetrable that, by the time anyone finds the holes in Accra, the bank is an indomitable force, too big to fail.—
Amanda Whiting,
Vulture,
23 Feb. 2026
Adjective
-
Conditions were treacherous and the roads were impassable.—
Jim Woods,
Chicago Tribune,
26 Feb. 2026
-
Some sidewalks are impassable for people with disabilities There was plenty more work left to do.—
Kimberlee Kruesi,
Los Angeles Times,
25 Feb. 2026
Adjective
-
France believed its Maginot Line of fortresses was impregnable – until the Germans simply went around it.—
New Atlas,
New Atlas,
19 Feb. 2026
-
South Africa’s racist system of Apartheid endured for generations and, so brutally was it maintained, appeared impregnable.—
Matthew Carey,
Deadline,
16 Feb. 2026
Cite this Entry
“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 4 Mar. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
