- imper´vi|ous|ness
- im|per|vi|ous «ihm PUR vee uhs», adjective.1. having no way through; not letting things pass through; allowing no passage: »
A raincoat made of rubber is impervious to rain.
SYNONYM(S): impermeable.2. Figurative. not open to argument, suggestions, etc.: »Because he was impervious to our hints, we finally told him it was time to go.
–im|per´vi|ous|ly, adverb.–imper´vi|ous|ness, noun.
Useful english dictionary. 2012.