thin or thick

impervious
(adj)
im-PUR-ve-ǝs
Meaning

1. impenetrable; incapable of being penetrated and entered

1st Sample Sentence

1. Ayodhya means "unassailable", and this ancient city was so called because it was impervious to any enemy attack.

2nd Meaning

unable to be affected by

2nd Sample Sentence

2. He refused to change his mind about the matter, being impervious to all attempts to reason with him.

Root

in (not, opposite of)#per (through)#via (road)

Mnemonics

"i m pervez (pervez musharraf)". no matter wat u say, i won't be affected!! im (not)+pravesh (enter) so unpenetrable. impervious = im-'not' + per-'completely' + vious 'via' [old] => not (completely via) => impossible to penetrate

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