/ Dictionary / Index E effing: Meaning and Definition of Find definitions for: eff•ing Pronunciation: (ef'ing), [key] — adj., adv. Slang. (used as an intensifier). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: effing (Thesaurus) effigy Effingham Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language