This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Incapable of being penetrated: a material impervious to water.

adj. Incapable of being affected: impervious to fear.

adj. unaffected or unable to be affected by

adj. preventative of any penetration; impenetrable, impermeable, particularly of water

adj. immune to damage or effect

adj. Not pervious; not admitting of entrance or passage through.

Not pervious; not to be passed through or penetrated; impermeable; impenetrable: as, a substance impervious to moisture.

Synonyms Impenetrable, impassable, pathless.

adj. not admitting of passage or capable of being affected

"We, the English, as you can see, are of average height, smoke a pipe, carry a rolled umbrella, go to the best schools, yet remain impervious to knowledge."

run-resistant    resistant    moth-resistant    colorfast    proof    runproof    acid-fast    corrosion-resistant    greaseproof    ladder-proof   

imperviously    imperviousness   

imperviable    impermeable    impassable    pathless    impenetrable   

invulnerable    impenetrable    oblivious    impregnable    inaccessible    insurmountable    valueless    uninhabitable    impermeable    unscathed