1
as in impervious
impossible to get through or into
the wall of security people surrounding the rock band was impermeable
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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
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Example Sentences
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Recent Examples of impermeable
The spongy material is mostly made of air, yet nearly impermeable to both air and liquid.
—
Brandee Gruener,
Southern Living,
29 Apr. 2026
When a finger contacts an impermeable surface, sweat pores within the ridges release moisture that plasticizes the skin’s keratin layer, which increases friction in turn.
—
Scott Travers,
Forbes.com,
14 Apr. 2026
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
See All Example Sentences for impermeable
Brandee Gruener,
Southern Living,
29 Apr. 2026
When a finger contacts an impermeable surface, sweat pores within the ridges release moisture that plasticizes the skin’s keratin layer, which increases friction in turn.
—
Scott Travers,
Forbes.com,
14 Apr. 2026
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
See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
Adjective
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Overloading Your Washer Even the softest of towels are not impervious to improper laundering, and overloading your washer or using too little water can affect how thoroughly the towels are washed.
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Crafted from durable high-density polyethylene, these Adirondack chairs are resistant to corrosion and impervious to the elements.
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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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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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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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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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.
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.
Cite this Entry
“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 5 Jul. 2026.
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