adjective

Definition:  not capable of being affected or disturbed or not capable of being damaged or harmed.

Source: http://www.merriam-webster.com/dictionary/impervious

I encountered this word on a normal day looking through my Instagram. One of my friends posted saying, people are always complaining and whining about the cold weather. He dont complain because he is impervious to the cold weather.

Since i didnt know what impervious ment i looked it up. Since i know what the word means now i understand what my friend was stating. That he dont complain about the cold weather because the cold weather doesnt affect him or does not feel any type of coldness, so he feels impervious to the cold.