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upend

American  
[uhp-end] / ʌpˈɛnd /

verb (used with object)

  1. to set on end, as a barrel or ship.

  2. to affect drastically or radically, as tastes, opinions, reputations, or systems.

  3. to defeat in competition, as in boxing or business.

verb (used without object)

  1. to become upended.

  2. to place the body back-end up, as a dabbling duck.

upend British  
/ ʌpˈɛnd /

verb

  1. to turn or set or become turned or set on end

  2. (tr) to affect or upset drastically

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of upend

First recorded in 1815–25; up- + end 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.