impervious

1. 1.

   not admitting of passage or capable of being affected

   “a material impervious to water”

   “someone impervious to argument”

   Synonymsimperviable

   Antonymspervious

   Similarfastacid-fastcolorfastgreaseproofmothproofproofresistantcorrosion-resistant

Questions about impervious

What does impervious mean?

impervious means "not admitting of passage or capable of being affected".

How many syllables are in impervious?

impervious has 4 syllables: im-per-vi-ous. The stress falls on "per". In IPA it is /ˌɪmˈpɝviəs/.

What is another word for impervious?

Close synonyms include imperviable. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

What is the opposite of impervious?

The recorded antonyms are pervious.

Is impervious a common word?

impervious is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.