impervious

[pioneer]

impervious   

im·per·vi·ous [im púrvee əss]
adjective
1.  not responsive: remaining unmoved and unaffected by other people's opinions, arguments, or suggestions
e.g. 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 

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