| Noun | 1. | legal duty - acts which the law requires be done or forborne duty, obligation, responsibility - the social force that binds you to the courses of action demanded by that force; "we must instill a sense of duty in our children"; "every right implies a responsibility; every opportunity, an obligation; every possession, a duty"- John D.Rockefeller Jr fiduciary duty - the legal duty of a fiduciary to act in the best interests of the beneficiary law, jurisprudence - the collection of rules imposed by authority; "civilization presupposes respect for the law"; "the great problem for jurisprudence to allow freedom while enforcing order" |