/ɪmpərˈvɪəl/ iMP-ər-VEE-əl

Definitions

1. adjective

having a surface or material that is not able to be penetrated or affected by water

“The impervial coating on the boat helped it stay afloat during the storm.”

2. noun

a person who is impervial, especially with regards to water

“The impervial person helped rescue those stranded in the flooded area.”