Scratchy — harsh (8)
I believe the answer is:
abrasive
I believe this clue is a double definition.
'scratchy' is the first definition.
(synonyms)
'harsh' is the second definition.
(I've seen this before)
(Other definitions for abrasive that I've seen before include "Rough polisher" , "Rough and scratchy" , "Arabs vie to be harsh or provocative" , "harsh, rough in manner" , "Harsh, causing angry feelings" .)