Was furious about a victory, devastated (7)
I believe the answer is:
ravaged
'devastated' is the definition.
(synonyms)
'was furious about a victory' is the wordplay.
'was furious' becomes 'raged' (I've seen this in other clues).
'about' means one lot of letters goes inside another.
'victory' becomes 'v'.
'a'+'v'='av'
'raged' enclosing 'av' is 'RAVAGED'.
(Other definitions for ravaged that I've seen before include "with wrecked appearance" , "laid waste" , "Devastated, having suffered great damage" , "Despoiled and pillaged" .)