/ Dictionary / Index U upbuild: Meaning and Definition of Find definitions for: up•build Pronunciation: (up-bild'), [key] — -built, -build•ing. to build up, as with the result of establishing, increasing, enlarging, or fortifying. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. upbringing upburst Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language