impervious
UK /ɪmˈpɜːvi.əs/ · US /ɪmˈpɝ.vi.əs/ adjective
- adjective Unaffected or unable to be affected by something. “The man was completely impervious to the deception we were trying.”
- adjective Preventive of any penetration; impenetrable, impermeable, particularly of water. “Although patchworked and sagging, the roof proved impervious to the weather.”
- adjective Immune to damage or effect. “The old car seemed to be impervious to the wear and tear of age.”
Synonyms
Antonyms
Etymology
From Latin impervius (“that cannot be passed through”), from in- (“not”) + pervius (“letting things through”).
Webster’s 1913
- adjective Not pervious; not admitting of entrance or passage through; as, a substance impervious to water or air. This gulf impassable, impervious. Milton.
Etymology [L. impervius; pref. im- not + per through + via way. See Voyage.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “impervious”, CC BY-SA 4.0. Details