impervious

adjective

1 he seemed impervious to the chill wind | she is impervious to his suggestions:

unaffected by, untouched by, immune to, invulnerable to, insusceptible to, not susceptible to, proof against, unreceptive to, closed to, resistant to, indifferent to, heedless of, unresponsive to, oblivious to, unmoved by, deaf to.

▷antonyms receptive to, susceptible to.

2 an impervious damp-proof course:

impermeable, impenetrable, impregnable, waterproof, watertight, water-resistant, water-repellent;

sealed, hermetically sealed;

rare imperviable.

▷antonyms permeable.