Category:Impervious

Im*per"vi*ous, a. Etym: [L. impervius; pref. im- not + per through + via way. See Voyage.]

Defn: 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.

Syn. -- Impassable; pathless; impenetrable; imperviable; impermeable. -- Im*per"vi*ous*ly, adv. -- Im*per"vi*ous*ness, n.