Shame! Don't believe it (9)
I believe the answer is:
discredit
'shame' is the definition.
(I've seen this before)
'don't believe it' is the wordplay.
I cannot really see how this works, but
'believe' could be 'credit' (I've seen this before) and 'credit' is located in the answer.
The remaining letters 'dis' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for discredit that I've seen before include "Cast doubt" , "Loss of reputation" , "Smear" , "explode" , "Refuse to believe" .)