/ Dictionary / Index A adulterer: Meaning and Definition of Find definitions for: a•dul•ter•er Pronunciation: (u-dul'tur-ur), [key] — n. a person who commits adultery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: adulterer (Thesaurus) adulteration adulteress Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language