/ Dictionary / Index A adieu: Meaning and Definition of Find definitions for: a•dieu Pronunciation: (u-d', u-dy' Fr. a-dyœ'), [key] — interj., n., pl. a•dieus, a•dieux —interj. good-bye; farewell. —n. the act of leaving or departing; farewell. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: adieu (Thesaurus) adient Adige Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language