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   im·per·vi·ous

   /imˈpərvēəs/

   adjective

   • 1. not allowing fluid to pass through: "an impervious layer of basaltic clay" Similar impermeableimpenetrableimpregnablewaterproofwatertightwater-resistantwater-repellentsealedhermetically sealedrare:imperviableOpposite permeable
   • ▪ unable to be affected by: "he worked, apparently impervious to the heat" Similar unaffected byuntouched byimmune toinvulnerable toinsusceptible tonot susceptible toproof againstunreceptive toclosed toresistant toindifferent toheedless ofunresponsive tooblivious tounmoved bydeaf toOpposite receptive tosusceptible to

   Word Origin mid 17th century: from Latin impervius (from in- ‘not’ + pervius ‘pervious’) + -ous.

   Derivatives

   • 1. imperviously adverb
   • 2. imperviousness noun

   Scrabble Points: 17

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2. www.merriam-webster.com › dictionary › imperviousImpervious Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › impervious

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   The meaning of IMPERVIOUS is not allowing entrance or passage : impenetrable. How to use impervious in a sentence. Did you know?

3. dictionary.cambridge.org › dictionary › englishIMPERVIOUS | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   IMPERVIOUS definition: 1. not allowing liquid to go through: 2. If someone is impervious to something,they are not…. Learn more.

4. www.dictionary.com › browse › imperviousIMPERVIOUS Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › impervious

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   adjective. not permitting penetration or passage; impenetrable: The coat is impervious to rain. incapable of being injured or impaired: impervious to wear and tear. incapable of being influenced, persuaded, or affected: impervious to reason; impervious to another's suffering. Synonyms: closed, invulnerable. impervious. / ɪmˈpɜːvɪəs / adjective.

5. dictionary.cambridge.org › us › dictionaryIMPERVIOUS | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › us › dictionary

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   IMPERVIOUS meaning: 1. not allowing liquid to go through: 2. If someone is impervious to something,they are not…. Learn more.

6. www.vocabulary.com › dictionary › imperviousImpervious - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › impervious

   adjective. not admitting of passage or capable of being affected. “a material impervious to water” “someone impervious to argument” synonyms: imperviable. impermeable. preventing especially liquids to pass or diffuse through. fast. resistant to destruction or fading. acid-fast.

7. www.collinsdictionary.com › dictionary › englishIMPERVIOUS definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   2 meanings: 1. not able to be penetrated, as by water, light, etc; impermeable 2. not able to be influenced (by) or not.... Click for more definitions.

8. www.thefreedictionary.com › imperviousImpervious - definition of impervious by The Free Dictionary

   www.thefreedictionary.com › impervious

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   adj. 1. not permitting penetration or passage: The pelt is impervious to rain. 2. incapable of being injured or impaired: impervious to wear and tear. 3. incapable of being influenced or affected: impervious to reason. [1640–50; < Latin impervius; see im- 2, pervious] im•per′vi•ous•ly, adv. im•per′vi•ous•ness, n.