IMPERVIOUS Synonyms: 51 Similar and Opposite Words

impervious

adjective

(ˌ)im-ˈpər-vē-əs

Definition of impervious

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

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 Properties with at least five acres of impervious surface will be subject to the rules. — Ian James, Los Angeles Times, 29 July 2026 Since her move, Hampton has established herself as England’s No 1 and one of the WSL’s most impervious goalkeepers. — Megan Feringa, New York Times, 28 July 2026 Still, the Smithsonian has never been impervious to political headwinds either. — Kelsey Ables, The Atlantic, 23 July 2026 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. — Louise Parks, Martha Stewart, 30 June 2026 See All Example Sentences for impervious

Recent Examples of Synonyms for 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 method works best with an opaque, impermeable tarp in hot, sunny weather, while cooler conditions may take longer and require cleanup after removal.

— Michelle Mastro, Martha Stewart, 26 Sep. 2026
But as the AfD gains clout through regional elections, the debate within the CDU over exactly how impermeable that firewall should be is also intensifying.

— Anna Noryskiewicz, CBS News, 18 Sep. 2026

Definition of impermeable

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

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

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

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

Browse Nearby Words

imperturbably

impervious

impetrate

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

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Synonyms of impervious

adjective

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