Inordinately greedy (9)
I believe the answer is:
rapacious
'inordinately greedy' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rapacious that I've seen before include "Greedy and grasping" , "Marauding, avaricious" , "Aggressively predatory" , "Aggressively greedy" , "Extortionate" .)