Being courteous is an important aspect of social interaction and it is essential to maintain good relationships with others. However, it is sometimes necessary to vary our language in order to avoid monotony. Thus, it is useful to know some synonyms for the phrase "be courteous" that can be incorporated into our daily language. Examples of such synonyms include "be polite", "show good manners", "be civil", "be respectful", "be well-mannered", "be considerate", "be gallant", and "be chivalrous". These synonyms give a wider range of options for expressing courteous behavior, making it easier to communicate with people from different cultures and backgrounds.