Added 9 October 2026
impervious
/ɪmˈpɜːvi.əs/ adjective
Latin root: impervius Wiktionary
adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about impervious at Wordnik → Where our words come from →
-
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.
Origin
From Latin impervius (“that cannot be passed through”), from in- (“not”) + pervius (“letting things through”).
From Wiktionary, via Kaikki.org (CC BY-SA)