Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
imperfect
imperfect competition
imperfect fungus
imperfection
imperfective
imperforate
imperia
imperial
imperial gallon
imperial moth
Imperial Valley
imperialism
imperil
imperious
imperishable
imperium
impermanent
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

impervious

im·per·vi·ous [ im púrvee əss ]


adjective 
Definition:
 
1. not responsive: remaining unmoved and unaffected by other people's opinions, arguments, or suggestions
He was impervious to the growing resentment among the staff.

2. not letting something through: not allowing passage into or through something
impervious to damp

[Mid-17th century. < Latin impervius< pervius (see pervious)]

im·per·vi·ous·ly adverb
im·per·vi·ous·ness noun
Advertisement

© 2009 Microsoft