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
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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
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Recent Examples of impervious
Waterproof materials are impervious to water, providing a complete barrier, while water-resistant materials only resist water penetration to a certain degree before the water seeps through.
—
Sophie Flaxman,
Better Homes & Gardens,
17 June 2026
From a tactical standpoint, the fort is unlikely to deter Hezbollah’s new crop of attack drones, which rely on fiber-optic cables and are impervious to jamming.
—
Nabih Bulos,
Los Angeles Times,
1 June 2026
This proposal involves extremely large impervious surfaces, roofing, pavement, truck courts, loading areas, and supporting infrastructure.
—
Sean Krofssik,
Hartford Courant,
27 May 2026
Other alternatives aim to solve problems that occur when impervious pavement prevents rainwater from soaking into the ground.
—
Aya Diab,
Fortune,
23 May 2026
See All Example Sentences for impervious
Sophie Flaxman,
Better Homes & Gardens,
17 June 2026
From a tactical standpoint, the fort is unlikely to deter Hezbollah’s new crop of attack drones, which rely on fiber-optic cables and are impervious to jamming.
—
Nabih Bulos,
Los Angeles Times,
1 June 2026
This proposal involves extremely large impervious surfaces, roofing, pavement, truck courts, loading areas, and supporting infrastructure.
—
Sean Krofssik,
Hartford Courant,
27 May 2026
Other alternatives aim to solve problems that occur when impervious pavement prevents rainwater from soaking into the ground.
—
Aya Diab,
Fortune,
23 May 2026
See All Example Sentences for impervious
Recent Examples of Synonyms for impervious
Adjective
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With life spent largely on transit, navigating tight layovers, and using their days off to jet-set across the globe, flight attendants have mastered the art of packing.
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Polls overall anticipate a tight race, including a June 19 survey by the news site Zeteo showing DeGette trailing Kiros 41% to 36%.
Adjective
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More memory, denser racks, faster deployment The new server promises 50 percent more memory per socket and more GPU memory compared to the previous generation.
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For ultimate comfort, the loveseat and chairs also include dense foam cushions wrapped in smooth polyester.
Adjective
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Engineers eventually replaced them with a version made up of 20 impermeable compartments of high-pressure hoses containing water.
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Dry waterproofing technology, which is basically like an invisible, impermeable sock liner.
Adjective
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With the wrap in front of you, fold up the edge closest to you.
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Because wells in the region are large and close to one another, restarting production will require significant coordination across companies and countries to ensure consistent pressure across multiple wells.
Adjective
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The combination makes strands thicker, fuller, stronger, frizz-free, and softer—and thus, longer with less shedding and breakage.
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The brown, round cookie has arms and legs, one eyebrow thicker than the other, and one buck tooth.
Adjective
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In spite of D'Arcy's best efforts, Rhaenyra is an impenetrable character with illogical choices and zero magnetism to the viewers (or seemingly, her councilors).
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The Shiatsung Project In a bungalow surrounded by an impenetrable wall, a woman has been raised in isolation by a talking screen mounted on the living room wall, fullfilling her every wish without ever revealing the reasons for its life and existence.
Adjective
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Alexander the Great conquered it in 332 BCE after building a causeway to what had been considered an impregnable island fortress.
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On that occasion a team made up of players who had all been born in Haiti shocked an Italy team famed for its impregnable defense.
Adjective
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South of there, at Kessler Air Force Base, several roads became impassible.
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Floodwaters in Waco left roads on Interstate 35 impassable and stranded drivers in their vehicles, prompting numerous search-and-rescue responses early Monday, June 15, Texas Game Wardens said.
Cite this Entry
“Impervious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impervious. Accessed 4 Jul. 2026.
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