/ Dictionary / Index A adios: Meaning and Definition of Find definitions for: ad•i•os Pronunciation: (ad"ē-ōs', ä"dē- Sp. ä-&thslashyôs'), [key] — interj. good-bye; farewell. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: adios (Thesaurus) ad interim adip- Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language