Indeed, some relief in being corrupted (7)
I believe the answer is:
debased
'being corrupted' is the definition.
('debased' can be a synonym of 'corrupted')
'indeed some relief in' is the wordplay.
'indeed some' becomes 'deed' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'relief' becomes 'bas relief' (bas relief is a kind of relief).
'in' indicates putting letters inside.
'deed' placed around 'bas' is 'DEBASED'.
Can you help me to learn more?
(Other definitions for debased that I've seen before include "Adulterated" , "Lowered the quality of" , "corrupted" , "Lowered in value" , "Lowered, depreciated" .)