Answer dealing with wrongful act (6)
I believe the answer is:
retort
'answer' is the definition.
(I know that retort is a type of answer)
'dealing with wrongful act' is the wordplay.
'dealing with' becomes 're' (regarding).
'wrongful act' becomes 'tort' (legal term).
're'+'tort'='RETORT'
(Other definitions for retort that I've seen before include "Part of chemist's equipment" , "Still" , "Witty reply" , "Riposte, reply" , "Answering remark" .)