toppled (10)
'toppled' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for upset that I've seen before include "Shock result!" , "Upheaval" , "Distressed; overturn" , "Make unhappy; disrupt" , "Pet us (anag)" .)
(Other definitions for overthrown that I've seen before include "Defeated" , "Upset" , "deposed" .)