/ Dictionary / Index A acrimonious: Meaning and Definition of Find definitions for: ac•ri•mo•ni•ous Pronunciation: (ak"ru-mō'nē-us), [key] — adj. caustic, stinging, or bitter in nature, speech, behavior, etc.: an acrimonious answer; an acrimonious dispute. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acrimonious (Thesaurus) Acrilan acrimony Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language