1
as in tight
not allowing penetration (as by gas, liquid, or light)
the material for this coat is supposed to be impervious to rain
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in dense
impossible to get through or into
the rain forest is impervious to all but the most dedicated explorers
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 impervious
Its thick plastic outer casing is impervious to flex.
—
PC Magazine, 28 May 2025
British travelers, however, are largely impervious to currency fluctuations.
—Monica Pitrelli, CNBC, 13 May 2025
The tiers are based on the square footage of impervious area on a property.
—Grace Hurt, Arkansas Online, 9 May 2025
This change alone reduced impervious surfaces by over 125,000 square feet, significantly decreasing runoff and improving stormwater management.
—Marshall Shepherd, Forbes.com, 28 Apr. 2025
See All Example Sentences for impervious
PC Magazine, 28 May 2025
British travelers, however, are largely impervious to currency fluctuations.
—Monica Pitrelli, CNBC, 13 May 2025
The tiers are based on the square footage of impervious area on a property.
—Grace Hurt, Arkansas Online, 9 May 2025
This change alone reduced impervious surfaces by over 125,000 square feet, significantly decreasing runoff and improving stormwater management.
—Marshall Shepherd, Forbes.com, 28 Apr. 2025
See All Example Sentences for impervious
Recent Examples of Synonyms for impervious
Adjective
-
The timeline is tight—most growth drivers need to materialize before 2028—but the groundwork is established.—
Trefis Team,
Forbes.com,
27 June 2025
-
Powell is in a tight spot because the U.S. rate of inflation is still above 3%.—
Jim Edwards,
Fortune,
26 June 2025
Adjective
-
These waves are often emitted by cold, dense regions of space, like the TMC-1, where new stars and complex organic molecules can form.—
Victoria Corless,
Space.com,
30 June 2025
-
Peering across a dense stretch of woodland outside Denmark's capital with camouflage paint smeared across her face, 20-year-old Katrine scanned the horizon for threats.—
Gabe Whisnant,
MSNBC Newsweek,
30 June 2025
Adjective
-
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
Adjective
-
The likelihood of lightning increases as a thunderstorm gets closer and reaches its highest point when the storm is directly overhead.—
NC Weather Bot,
Charlotte Observer,
28 June 2025
-
The championship is Oklahoma City’s first since relocating from Seattle in 2008; for the Pacers, close wasn’t good enough for their second straight season with a strong playoff run before falling to the eventual NBA champs.—
USA TODAY,
USA Today,
28 June 2025
Adjective
-
Simply lather a thick coating of petroleum jelly onto the scratch.—
Kaitlyn Yarborough,
Southern Living,
21 June 2025
-
As thick clouds billowed out of Eyjafjallajökull, the skies over the North Atlantic — one of the world’s busiest aviation routes — fell silent, with air traffic dropping to levels that wouldn’t be seen again until the Covid pandemic a decade later.—
Brad Lendon,
CNN Money,
21 June 2025
Adjective
-
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
-
This must be key to Trump’s impenetrable calculations.—
Nick Paton Walsh,
CNN Money,
19 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
-
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
-
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
-
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
“Impervious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impervious. Accessed 5 Jul. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share