IMPERMEABLE Synonyms: 51 Similar and Opposite Words

impermeable

adjective

(ˌ)im-ˈpər-mē-ə-bəl

Definition of impermeable

as in impervious

impossible to get through or into the wall of security people surrounding the rock band was impermeable

Synonyms & Similar Words

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Antonyms & Near Antonyms

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

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 impermeable Playing the American League’s best team, the Padres had the final two games of the series in hand before the practically impermeable back end of their bullpen blew late leads. — Kevin Acee, San Diego Union-Tribune, 31 Aug. 2026 Spain needed until the 106th minute to slip a Ferran Torres shot past the impermeable goalkeeping of Argentina’s Emiliano Martínez, whose championship-game record 11 saves proved one too few. — Jerry Brewer, New York Times, 20 July 2026 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. — Julia Harrison, Architectural Digest, 26 June 2026 Needing to remain impermeable to everything that is said about him is another stylistic exercise built into the equation of being a global star. — Time, Time, 26 June 2026 See All Example Sentences for impermeable

Recent Examples of Synonyms for impermeable

Adjective

None of the eight simulations were impervious to the threats, and even when agents detected a risk, the detection didn’t translate into the agents trying to contain the threat.

— Jake Angelo, semafor.com, 15 Sep. 2026
Many Russians may not regard Putin’s regime as solicitous of the public good, which could explain the withdrawal of capital from the country, but the regime is also accepted as a given, a distant presence impervious to outside influence.

— MICHAEL KIMMAGE, Foreign Affairs, 14 Sep. 2026

Definition of impervious

Adjective

Every dollar poured in weaves the technology’s success and the US economy tighter and tighter together.

— Yerbol Orynbayev, Fortune, 3 Oct. 2026
Similar tensions are emerging in South Korea, with growing opposition to data centers near residential areas and proposals for tighter local restrictions, even as the national government pushes to accelerate development.

— April Roach,Jenny Lee, CNBC, 3 Oct. 2026

Definition of tight

Adjective

On paper, director Tom McCarthy‘s latest film, A Statement might appear to be a dense polemic, hardly the stuff of exciting moviemaking.

— Pete Hammond, Deadline, 3 Oct. 2026
This show brings back the lighter stand-alone episode structure of the original's early seasons, with a less dense art style.

— K. Thor Jensen, PC Magazine, 2 Oct. 2026

Definition of dense

Adjective

The theme spills out into a walled garden, where the pool (which could have been a Raj pond in a past life) is lined with white parasols and thick, cushioned loungers.

— Condé Nast, Condé Nast Traveler, 6 Oct. 2026
His lovely camel-hair coat and thick scarf on this cold day gave him an air of elegance.

— Literary Hub, Literary Hub, 6 Oct. 2026

Definition of thick

Adjective

The first five conditions describe any lasting affectionate bond, such as a close friendship.

— Pascal Vrticka, Scientific American, 4 Oct. 2026
While formally a candidate for European Union membership, Serbia’s accession process has stalled under Vucic, who maintains close ties with Russia and China.

— ABC News, ABC News, 3 Oct. 2026

Definition of close

Adjective

Some streets in Norfolk, Virginia, were closed Wednesday due to flooding and several are expected to be impassable during high tide Thursday, City Councilman Thomas Smigiel said in a social media post.

— Mary Gilbert, CNN Money, 24 Sep. 2026
About 40 miles south of Newcomb in the small community of Mexican Springs, flooding made many dirt and gravel roads impassable, stranding some families and leaving others unable to reach home.

— Jessica Hill, Los Angeles Times, 19 Sep. 2026

Definition of impassable

Adjective

Dropped catches from Steve Smith, Green and Travis Head ensured yesterday's brief rally in the field fizzled out and allowed Bangladesh to bat itself into an almost impregnable position.

— ABC News, ABC News, 14 Aug. 2026
The shell of a good- sized adult abalone is more or less impregnable to most of the kelp forest’s predators, too strong and too thick for penetration.

— Literary Hub, Literary Hub, 29 July 2026

Definition of impregnable

Browse Nearby Words

impermanent

impermeable

impermissible

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“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 9 Oct. 2026.

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Synonyms of impermeable

adjective

Example Sentences

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