Breadcrumb Home > Dictionary > Index O oomph: Meaning and Definition of Find definitions for: oomph Pronunciation: (oomf), [key] — n. Informal. energy; vitality; enthusiasm. sex appeal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oomph (Thesaurus) Oom Paul oomycete ✖ Related Content Daily Word Quiz: glissade Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language