n. duty, moral or ritual obligation

Not until introductions are complete. Zin. Heyv. Test your Thu'um against mine, Dovahkiin!
(Paarthurnax, 0003F9E6)

Nii los heyv do enook mun wah lahney voth ahkrin ahrk zin, leh rok Feim vodahmin kotin vulom.
It is the duty of each man to live with courage and honor, lest he Fade unremembered into darkness.
(Word Wall for Feim, Become Ethereal)

Bound by honor, formality, or morals. Inborn sense of moral duty that drives action. Generally does not refer to duty as sworn by oath or owed by service (‘a servant’s duties’).