A sin of one mind (6)

I believe the answer is:

agreed

'of one mind' is the definition.
(I've seen this before)

'a sin' is the wordplay.
'sin' becomes 'greed' (greed is a kind of sin).
'a'+'greed'='AGREED'

(Other definitions for agreed that I've seen before include "Shared an opinion" , "Was fitting" , "Held the same opinion" , "Concurred - tallied" , "Settled by common consent" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.