Negotiate using diplomacy to receive right answer (8)
I believe the answer is:
transact
'negotiate' is the definition.
(thesaurus)
'diplomacy to receive right answer' is the wordplay.
'diplomacy' becomes 'tact' (I've seen this before).
'to receive' is an insertion indicator.
'right' becomes 'r' (common abbreviation).
'answer' becomes 'ans' (A common abbreviation).
'r'+'ans'='rans'
'tact' placed around 'rans' is 'TRANSACT'.
'using' is the link.
(Other definitions for transact that I've seen before include "Conduct trade" , "Manage" , "Perform or carry out business" , "Buy or sell" , "Carry out, like business" .)