/ Dictionary / Index D doubly: Meaning and Definition of Find definitions for: dou•bly Pronunciation: (dub'lē), [key] — adv. to a double measure or degree: to be doubly cautious. in a double manner. with duplicity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: doubly (Thesaurus) doublure Doubs Related Content Daily Word Quiz: designate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language