impervious Definition

impervious
adj

1. Said of a substance or material, etc: not allowing (eg water) to pass through or penetrate it; impermeable.

Thesaurus: impenetrable, impermeable, resistant, sealed, impassable.
2. Not influenced or affected by it.

Example: They seem impervious to criticism
Thesaurus: unreceptive, unaffected, unmoved, invulnerable, untouched; Antonym: responsive.

Derivative: imperviously
adverb

Derivative: imperviousness
noun

Etymology: 17c: from Latin impervius, from via way.