impervious

Etymology

From Latin impervius (“that cannot be passed through”), from in- (“not”) + pervius (“letting things through”).

adj

1. Unaffected or unable to be affected by something.
   The man was completely impervious to the deception we were trying.
   For the past decade there were two more or less universally acknowledged truths about digital advertising. First, the rapidly growing industry was largely impervious to the business cycle. 2022-09-18, “The $300bn Google-Meta advertising duopoly is under attack”, in The Economist, →ISSN
2. Preventive of any penetration; impenetrable, impermeable, particularly of water.
   Although patchworked and sagging, the roof proved impervious to the weather.
3. Immune to damage or effect.
   The old car seemed to be impervious to the wear and tear of age.