Hurt imp upset by exultation? (7)
I believe the answer is:
triumph
'exultation?' is the definition.
(I know that triumph is a type of exultation)
'hurt imp upset' is the wordplay.
'upset' indicates an anagram.
'hurt'+'imp'='hurtimp'
'hurtimp' with letters rearranged gives 'TRIUMPH'.
'by' acts as a link.
(Other definitions for triumph that I've seen before include "Outstanding victory" , "hit" , "Conquer, prevail" , "Victory - jubilation" , "Achieve complete victory" .)