impervious
im|per|vi|ous /ɪmp'ɜːrviəs/
1 [ADJ] usu v-link ADJ, usu ADJ to n
If you are impervious to someone's actions, you are not affected or influenced by them.
She seems almost impervious to the criticism from all sides...
2 [ADJ] oft ADJ to n
Something that is impervious to water, heat, or a particular object is able to resist it or stop it passing through it.
The floorcovering you select will need to be impervious to water.
= impermeable
1 [ADJ] usu v-link ADJ, usu ADJ to n
If you are impervious to someone's actions, you are not affected or influenced by them.
She seems almost impervious to the criticism from all sides...
2 [ADJ] oft ADJ to n
Something that is impervious to water, heat, or a particular object is able to resist it or stop it passing through it.
The floorcovering you select will need to be impervious to water.
= impermeable