/ Dictionary / Index D duly: Meaning and Definition of Find definitions for: du•ly Pronunciation: (d'lē, dy'-), [key] — adv. in a due manner; properly; fittingly. in due season; punctually. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: duly (Thesaurus) Duluth duma Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language