Crossword Genius

Upset on account of change (8)

Ross

I believe the answer is:

overturn

'upset' is the definition.
(I've seen this before)

'on account of change' is the wordplay.
'on account of' becomes 'over'.
'change' becomes 'turn' (turn is a kind of change**).
'over'+'turn'='OVERTURN'

(Other definitions for overturn that I've seen before include "Reverse (legal ruling)" , "Reverse, rescind," , "Capsize - invalidate" , "Empty out" , "Reverse; upend" .)

I've seen this clue in The Independent.
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