/ Dictionary / Index F foulness: Meaning and Definition of Find definitions for: foul•ness Pronunciation: (foul'nis), [key] — n. the state or quality of being foul: The foulness of the accusation incensed us all. something that is foul; foul matter; filth. wickedness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: foulness (Thesaurus) foulmouthed foul play Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language