That cannot be penetrated or passed through
Susceptible to emotional injury, especially in being easily hurt:
That cannot be wounded or injured
Impossible to reach or enter
Completely sealed by fusion, soldering, etc. so as to keep air or gas from getting in or out; airtight
Leaving little empty space through compression; compact:
Not susceptible to or admitting of:
Open to arguments, ideas, or change; approachable.
Revealing no emotion; expressionless.
So snugly put together that no water can get in or through
That can be penetrated
That can be permeated; open to passage or penetration, esp. by fluids
Of or relating to secret or classified information:
Completely obvious; blatant:
unable to be penetrated
Relating to immunity or an immune response.
Of standard alcoholic strength:
Capable of, offering, or showing resistance. Often used in combination:
Having the capacity to withstand
Sensitive to, and readily reacting to, stimuli, changes, control mechanisms, etc.
Of, tending toward, or marked by resistance:
Find another word for impervious. In this page you can discover 32 synonyms, antonyms, idiomatic expressions, and related words for impervious, like: impenetrable, unmoved, vulnerable, invulnerable, inaccessible, hermetic, tight, unsusceptible, pervious, impassive and callous.