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