/ Dictionary / Index U upbeat: Meaning and Definition of Find definitions for: up•beat Pronunciation: (up'bēt"), [key] — n. Music. an unaccented beat, esp. immediately preceding a downbeat. the upward stroke with which a conductor indicates such a beat. —adj. optimistic; happy; cheerful: television dramas with predictably upbeat endings. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: upbeat (Thesaurus) upbear upbound Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language