What does "impervious" mean?
Impervious: Not pervious; not admitting of entrance or passage through; as, a substance impervious to water or air. This gulf impassable, impervious. Milton. The minds of these zealots were absolutely impervious. Macaulay. -- Im*per"vi*ous*ly, adv. -- Im*per"vi*ous*ness, n.
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
- Canonical URL: https://worddirectanswers.com/answers/what-does-impervious-mean
- Steward: Jason Burns
- Published: 2026-07-17 · Modified: 2026-07-17