Synonyms for duly Found 6 synonyms across 1 meaning for “duly”. in accordance with what is appropriate or suitable for the circumstances (adv) appropriatelysuitablyfittinglybefittinglyfitlyproperly Explore Related Words Rhymes with dulySynonyms for appropriatelySynonyms for suitablySynonyms for fittinglySynonyms for befittinglySynonyms for fitly Synonym Finder | Rhyme Finder | Poetry Editor