Concurred, taking front off vice (5)
I believe the answer is:
greed
'vice' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for greed that I've seen before include "Wanting too much" , "Gluttony" , "Avidity" , "Voracity" , "Craving" .)