A deadly sin all right (6)

I believe the answer is:

agreed

'all right' is the definition.
(thesaurus)

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

(Other definitions for agreed that I've seen before include "Did concur" , "In harmony" , "Corresponded" , "Accorded" , "granted" .)

I've seen this clue in The Telegraph.

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