Caviare might produce selfishness (7)
I believe the answer is:
avarice
'selfishness' is the definition.
(thesaurus)
'caviare might produce' is the wordplay.
'might produce' indicates an anagram (I've seen this in other clues).
'caviare' is an anagram of 'AVARICE'.
(Other definitions for avarice that I've seen before include "Parsimony" , "Stinginess" , "Rapacity" , "Wanting to be rich" , "Excessive greed for wealth" .)