Definition of impervious:
run-resistant, unmoved, resistive, soundproof, impassive, moth-resistant, hermetic, insusceptible, mothproof, tight, resist, imperviable, proof, greaseproof, callous, inaccessible, indifferent, ladder-proof, unsusceptible, runproof, resistant.
There she was before me; built up, as it were, in a marble cell, impervious to any ray of light, or particle of sound; with her poor white hand peeping through a chink in the wall, beckoning to some good man for help, that an immortal soul might be awakened.- "Dickens As an Educator", James L. (James Laughlin) Hughes.
- "The Joyous Adventures of Aristide Pujol", William J. Locke.
- "Religious Perplexities", L. P. Jacks.