/ Dictionary / Index D DEA: Meaning and Definition of Find definitions for: DEA Pronunciation: [key] Drug Enforcement Administration. Dea. Pronunciation: [key] Deacon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dea (Thesaurus) de deaccelerate Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language