Devoir

(n.) Duty; service owed; hence, due act of civility or respect; -- now usually in the plural; as, they paid their devoirs to the ladies.

Thesaurus Entries

acquiescence, adherence, adhesion, assigned task, attachment, bona fides, bond, bonne foi, bounden duty, burden, business, call of duty, charge, commitment, compliance, conformity, consecration, constancy, dedication, deference, devoir, devotedness, devotion, duteousness, duties and responsibilities, dutifulness, duty, ethics, faith, faithfulness, fealty, fidelity, firmness, good faith, homage, honor, imperative, line of duty, loyalty, mission, must, obedience, obediency, obligation, observance, onus, ought, piety, place, respect, self-imposed duty, service, servility, servitium, staunchness, steadfastness, submission, submissiveness, suit and service, suit service, tie, troth, true blue, trueness, willingness