cour·te·ous 
/ˈkɚtijəs/ adjective
/ˈkɚtijəs/ adjective [more courteous; most courteous] : very polite in a way that shows respect
▪ The clerks were helpful and courteous. ▪ a courteous manner — opposite discourteous
▪ The clerks were helpful and courteous. ▪ a courteous manner — opposite discourteous
— cour·te·ous·ly adverb
▪ He answered my questions courteously.
▪ He answered my questions courteously.
— cour·te·ous·ness noun [noncount]
▪ I appreciated his courteousness.
▪ I appreciated his courteousness.
