Synonyms for duty Found 3 synonyms across 2 meanings for “duty”. the social force that binds you to the courses of action demanded by that force (noun) responsibilityobligation a government tax on imports or exports (noun) tariff Explore Related Words Rhymes with dutySynonyms for responsibilitySynonyms for obligationSynonyms for tariff Synonym Finder | Rhyme Finder | Poetry Editor