Judge point of view to upset (6)
I believe the answer is:
jangle
'upset' is the definition.
(thesaurus)
'judge point of view' is the wordplay.
'judge' becomes 'j'.
'point of view' becomes 'angle' (angle is a kind of point of view).
'j'+'angle'='JANGLE'
'to' acts as a link.
(Other definitions for jangle that I've seen before include "Cacophony" , "clink" , "(Of nerves) be set on edge" , "Unpleasant ringing noise" , "Make a discordant ringing noise" .)