/ Dictionary / Index U upend: Meaning and Definition of Find definitions for: up•end Pronunciation: (up-end'), [key] — v.t. to set on end, as a barrel or ship. to affect drastically or radically, as tastes, opinions, reputations, or systems. to defeat in competition, as in boxing or business. —v.i. to become upended. to place the body back-end up, as a dabbling duck. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: upend (Thesaurus) updrift upfold Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language