Great purse, ruined (5)
I believe the answer is:
super
'great' is the definition.
(I've seen this before)
'purse ruined' is the wordplay.
'ruined' is an anagram indicator.
'purse' is an anagram of 'SUPER'.
(Other definitions for super that I've seen before include "Gushily great, excellent" , "Prefix meaning over-excellent!" , "Prefix meaning above or informally great" , "(Of product) of extra fine quality" , "Outstanding" .)