Angry gripe about disgraceful advantage given only to a few (9)
I believe the answer is:
privilege
'advantage given only to a few' is the definition.
(I've seen this before)
'angry gripe about disgraceful' is the wordplay.
'angry' is an anagram indicator.
'about' indicates putting letters inside.
'disgraceful' becomes 'vile' (both can mean despicable).
'gripe' is an anagram of 'prige'.
'prige' enclosing 'vile' is 'PRIVILEGE'.
(Other definitions for privilege that I've seen before include "Class advantage" , "Special right" , "advantage given only to a few" , "Advantage of one group denied to others" , "Favour not available to all" .)