Repeat charge about corruption (6)
I believe the answer is:
parrot
'repeat' is the definition.
(parroting is a kind of repeating)
'charge about corruption' is the wordplay.
'charge' becomes 'rap' (I have seen 'Criminal charge ' mean 'rap' so perhaps 'charge' could also mean 'rap').
'about' is a reversal indicator.
'corruption' becomes 'rot' (I've seen this before).
'rap' written backwards gives 'par'.
'par'+'rot'='PARROT'
(Other definitions for parrot that I've seen before include "Tropical bird for Pat Orr" , "Squawking bird" , "Unintelligent imitator" , "Avian mimic" , "Spout" .)