As a Noun:
1. Behaviour that is not polite. English = rudeness, impoliteness.
2. Language and behaviour that are likely to embarrass or offend people because they relate to sex or other bodily functions. English = rudeness.
As a Verb or Adjective:
1. To behave in a way that is not polite. English = (be) rude, (be) impolite.
2. Of language and behaviour, to be likely to embarrass or offend people because they relate to sex or other bodily functions. English = (be) rude.
3. To behave in a bad-mannered, unpleasant and unacceptable way. English = (be) uncouth.