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
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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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Videos of the pyrotechnics display show the pitch filling with tall showers of sparks and dense smoke as dozens of fireworks launched upward.
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The rare Saturday night game at the iconic North Side ballpark started an hour late due to rain, then fog billowed in from the north starting in the second inning and got denser.
Adjective
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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.
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Needing to remain impermeable to everything that is said about him is another stylistic exercise built into the equation of being a global star.
Adjective
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Even though talks with the Boston Red Sox at last year’s deadline never got close, the confusion provided by an incorrect tweet announcing Ryan’s trade to New England put the pitcher at the top of every trade list before the season even began.
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Ashley Smith is the manager of player engagement for the NFL, and the siblings are close.
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 the venue’s defense, the arena’s near-impenetrable exterior likely had something to do with its appeal.
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Quaintance, in particular, is potentially a monster on defense, and uniting him with Wembanyama might make this team virtually impenetrable.
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 6 Jul. 2026.
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