Denial from victim with concrete overcoat (8)
I believe the answer is:
rebuttal
'denial' is the definition.
(I've seen this before)
'victim with concrete overcoat' is the wordplay.
I cannot quite understand how this works, but
'victim' could be 'butt' (as in the butt of a joke) and 'butt' is found in the answer.
'concrete' could be 'real' (similar in meaning) and 'real' is found within the leftover letters.
No letters remain.
This explanation may well be incorrect...
'from' acts as a link.
Can you help me to learn more?
(Other definitions for rebuttal that I've seen before include "counterclaim" , "Refutation, contradiction" , "Counter-argument" , "resistance to attack" , "statement delivered to counter" .)