A vice accepted without dissent (6)
I believe the answer is:
agreed
'accepted without dissent' is the definition.
'agreed' can be an answer for 'accepted' (agreeing is a kind of accepting). I'm unsure of the 'without dissent' bit.
'a vice' is the wordplay.
'vice' becomes 'greed' (I've seen this before).
'a'+'greed'='AGREED'
Can you help me to learn more?
(Other definitions for agreed that I've seen before include "Consented, settled" , "Expressed willingness" , "Jointly decided" , "very well" , "came to the same conclusion" .)