Definitions for upendʌpˈɛnd
Random House Webster's College Dictionary
to set on end, as a barrel or ship.
to affect drastically or radically, as tastes, opinions, or reputations.
to defeat in competition.
(v.i.)to become upended.
to place the body back-end up, as a dabbling duck.
become turned or set on end
"the airplanes upended"
set, turn, or stand on end
"upend the box and empty the contents"
To end up; to set on end.
To tip or turn over.
When he upended the bottle of water over his sleeping sister, the lid popped off and surprised them both.
To destroy, invalidate, overthrow, or defeat.
The scientific evidence upended the popular myth.
to end up; to set on end, as a cask