Difference between Ill-mannered and Impolite

What is the difference between Ill-mannered and Impolite?

Ill-mannered as an adjective is of or pertaining to having bad manners; impolite. while Impolite as an adjective is not polite; not of polished manners; wanting in good manners.

We hope you now know whether to use Ill-mannered or Impolite in your sentence.