Accomplice's response to 'B: Good'? (7)
I believe the answer is:
abetter
'accomplice's' is the definition.
(abetter is a kind of accomplice)
''b good'?' is the wordplay.
''b' becomes 'a' (I can't justify this - if you can you should believe this answer much more).
'good'?' becomes 'better' (better is a kind of good).
'a'+'better'='ABETTER'
'response to' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for abetter that I've seen before include "who gives encouragement?" , "He criminally assists" , "One who illegally helps" , "One who encourages" , "I'll help!" .)