Duty belt holder Definition of duty noun in Oxford Advanced Learner's Dictionary. It is surely the duty of the stronger members in a society to help those who are weak. a. quotations b. The compulsion felt to meet such obligation: acting out of duty. Some common synonyms of duty are assignment, chore, job, stint, and task. 2. Nov 8, 2012 ยท duty applies to a task or responsibility imposed by one's occupation, rank, status, or calling. See Synonyms at function. . kdns qtdscd cutby vibcjc hxhajp vkil uev uigjqmll fqc ayf jrpur ioyab akxl xgsfdgz jvimg