impervious.
Unaffected or unable to be affected by something.
Meaning & usage
Unaffected or unable to be affected by something.
The man was completely impervious to the deception we were trying.
Preventive of any penetration; impenetrable, impermeable, particularly of water.
Although patchworked and sagging, the roof proved impervious to the weather.
Immune to damage or effect.
The old car seemed to be impervious to the wear and tear of age.
Where this word comes from
From Latin impervius (“that cannot be passed through”), from in- (“not”) + pervius (“letting things through”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.