( formal ) to feel that you must do sth because of your sense of moral duty :
She felt honour bound to attend as she had promised to.
( formal ) to feel that you must do sth because of your sense of moral duty :
She felt honour bound to attend as she had promised to.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005