impure

The impure gemstone was not good enough to be made into a necklace, so it was thrown out.

He was thinking impure thoughts involving a girl from school.

“No one would marry her if she was impure, don't you see?” “Impure? Surely if a woman is forcibly deprived of her virginity, she can't be thought of as impure.”

Impure drinking water can be a carrier of diseases.

In many religions, masturbation is considered a sin and an impure act.

The trouble is not with impure politics, but that the whole game of politics is rotten.