Greedy artist has chop for starter (4)
I believe the answer is:
avid
'greedy' is the definition.
(synonyms)
'artist has chop for starter' is the wordplay.
'artist' becomes 'david' (French painter Jacques-Louis David).
'has chop for starter' means to remove the first letter (the first letter is chopped off).
'david' with its first letter removed is 'AVID'.
(Other definitions for avid that I've seen before include "Keenly enthusiastic" , "Keenly interested" , "Fervent" , "Greedy like diva" , "Zealous, enthusiastic" .)