Is duty bound - Idioms by The Free Dictionary
be duty bound (redirected from is duty bound)
be duty bound
To be obligated or expected to do something. Now that our parents are dead, I'm duty bound to care for my siblings. As a parent, you are duty bound to protect your child.
be/feel duty/honour ˈbound to do something (British English) (American English be/feel duty/honor ˈbound to do something) (formal) feel that you must do something because of your sense of moral duty: She felt honour bound to attend as she had promised to. ♢ Most people think that children are duty bound to look after their parents when they are old.