impervious

An impervious surface is one that can't be penetrated. The word is often followed by "to," as in "His steely personality made him impervious to jokes about his awful haircut."

Most of the sentences you'll run across using impervious will be followed by the word "to" and a noun. Things are often described as being impervious to physical assaults like heat, water, bullets, weather, and attack, but just as frequently to less tangible things, like reason, criticism, pain, and pressure. The word comes from Latin: in- + pervius, meaning "not letting things through." A common synonym is impermeable.

Definitions of impervious
1

adj not admitting of passage or capable of being affected

“a material impervious to water”
“someone impervious to argument”
Synonyms:
imperviable
impermeable
preventing especially liquids to pass or diffuse through
fast
resistant to destruction or fading
acid-fast
not easily decolorized by acid solutions; pertains to micro-organisms (especially the tubercle bacillus that causes tuberculosis)
colorfast
having color that is resistant to fading or running
greaseproof
resistant to penetration by grease or oil or wax
moth-resistant, mothproof
resistant to damage by moths
proof
(used in combination or as a suffix) able to withstand
resistant
impervious to being affected
corrosion-resistant
impervious to corrosion
rot-resistant
resistant to rotting
ladder-proof, run-resistant, runproof
(of hosiery) resistant to runs or (in Britain) ladders
soundproof
impervious to, or not penetrable by, sound
Antonyms:
pervious
admitting of passage or entrance
permeable
allowing fluids or gases to pass or diffuse through
receptive
open to arguments, ideas, or change
show more antonyms...

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