It is impolite to elbow one's way through the crowd.
It's impolite to stare at people.
It was impolite of him not to say goodbye.
It was impolite of him to do so.
He is impolite, not to say rude.
I can't stand his impoliteness.
He was impolite, not to say rude.
He is so impolite that everyone hates him.
He was impolite, not to say rude.
It's very impolite of you to decline her invitation.