impervious

adjective

Meaning

Not allowing fluid to pass through, or remaining unaffected by external influences or criticism.

Examples

  • The new raincoat is made of an impervious material that keeps you dry in the worst storms.
  • She remained impervious to his insults, continuing her work as if he had not spoken at all.

Synonyms: waterproof, resistant, unaffected, impenetrable, indifferent