Give treacherous cad fee for damage (6)
I believe the answer is:
deface
'for damage' is the definition.
(I've seen this before)
'give treacherous cad fee' is the wordplay.
'cad fee' anagrams to 'DEFACE'.
However, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for deface that I've seen before include "Spoil or damage the surface of" , "blemish" , "Wantonly spoil the look of" , "Spoil the surface of as with graffiti" , "Mar or spoil the appearance of" .)