Support talk even if it’s rude response (8)
I believe the answer is:
backchat
'response' is the definition.
(thesaurus)
'support talk' is the wordplay.
'support' becomes 'back' (back is a kind of support).
'talk' becomes 'chat' (I've seen this before).
'back'+'chat'='BACKCHAT'
'even if it's rude' is the link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for backchat that I've seen before include "Impudence" , "Impudent rejoinder" , "Impudent retort" , "Effrontery" , "Impertinence" .)