/ Dictionary / Index U uptilt: Meaning and Definition of Find definitions for: up•tilt Pronunciation: (up-tilt'), [key] — v.t. to tilt up. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. uptight uptime Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language