Definitions:

1. Not affected by or not susceptible to influence, criticism, or harm. ADJECTIVE
   • She remained impervious to the insults and continued with her presentation confidently.
2. Not allowing a liquid, gas, or other substance to pass through. ADJECTIVE
   • The raincoat is made of material impervious to water.
3. Not allowing something to pass through or be affected by something. ADJECTIVE
   • The new sealant makes the roof impervious to leaks during heavy rainstorms.

Synonyms:

• immune
• impenetrable
• impermeable
• imperviable
• insusceptible
• resistant
• unaffected

NearBy Words:

• imperviousness