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
Turan said while there are more residential properties, non-residential properties make up about 63% of impervious areas.
—
Catherine Dominguez, Houston Chronicle, 4 Mar. 2026
Flooding is exacerbated by increasing the impervious area.
—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
And the PlumaFill proved impervious to moisture, too.
—Kelly Bastone, Outside, 10 Feb. 2026
See All Example Sentences for impervious
Catherine Dominguez, Houston Chronicle, 4 Mar. 2026
Flooding is exacerbated by increasing the impervious area.
—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
And the PlumaFill proved impervious to moisture, too.
—Kelly Bastone, Outside, 10 Feb. 2026
See All Example Sentences for impervious
Recent Examples of Synonyms for impervious
Adjective
-
Organizers now hold the Israeli gathering at undisclosed venues and under tight security, broadcasting to multiple sites for those who wish to participate remotely.—
Tal Shalev,
CNN Money,
21 Apr. 2026
-
Kevin May, a Delta A350 captain who is directly involved with the GEESE project, compares the flight pattern to cycling in tight packs.—
Megan Wollerton,
Condé Nast Traveler,
21 Apr. 2026
Adjective
-
The 5,000-square-foot store and gallery will benefit from the street’s dense foot traffic and its proximity to the Museum of Contemporary Art and other cultural institutions.—
Brian J. Rogal,
Chicago Tribune,
21 Apr. 2026
-
Mussels, for instance, create strong underwater adhesives and fibers through dense protein droplets.—
Alexandra Harrell,
Footwear News,
20 Apr. 2026
Adjective
-
The outer layer hardened and became impermeable.—
Catherina Gioino,
Fortune,
11 Apr. 2026
-
Oil and gas infuse the pores of sandstone; layers of impermeable caprock trap it inside.—
Jeffrey Marlow,
New Yorker,
5 Apr. 2026
Adjective
-
After entering the game tied at 3 in the ninth, Mets closer Devin Williams allowed two runs in a disastrous final frame to fall to the Twins 5-3 and record their 12th loss in a row, their longest streak since 2002.—
James O'Connell,
New York Daily News,
22 Apr. 2026
-
Two Southwest Airlines jets got dangerously close near Nashville on Saturday, triggering collision alarms.—
Aaron Cooper,
CNN Money,
21 Apr. 2026
Adjective
-
Dandelion seeds easily take hold in bare spots, so keep your lawn thick and healthy.—
Brandee Gruener,
Southern Living,
11 Apr. 2026
-
In addition to a thick webbed strap that's adjustable, the bag features two exterior zippered pockets with RFID-blocking technology to protect important travel essentials like cell phones, hotel room keys, passports, and credit cards.—
Michelle Baricevic,
Travel + Leisure,
11 Apr. 2026
Adjective
-
This was one of the city's most impenetrable buildings, surrounded by armed guards, made to look uninviting and unappealing.—
Condé Nast,
Condé Nast Traveler,
23 Apr. 2026
-
Clearly, Villeneuve knows how to turn an impenetrable and famously difficult literary material into something truly cinematic and sweeping.—
Brent Lang,
Variety,
15 Apr. 2026
Adjective
-
The multiple attacks could be a major victory for the jihadis in a city seen as impregnable, despite attackers often targeting troops and villages on the outskirts of the city.—
Haruna Umar,
Los Angeles Times,
17 Mar. 2026
-
The multiple attacks could be seen as a major victory for the jihadis in a city seen as impregnable despite the jihadis often targeting troops and villages on the outskirts of the city.—
ABC News,
ABC News,
16 Mar. 2026
Adjective
-
Also check the weather; most roads in the monument are dirt or gravel and can become impassable in rain.—
Los Angeles Times,
Los Angeles Times,
10 Apr. 2026
-
The critical shipping passage has been largely impassable since the conflict began more than a month ago.—
Sarah Min,
CNBC,
3 Apr. 2026
Cite this Entry
“Impervious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impervious. Accessed 25 Apr. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
