Scratchy (8)
I believe the answer is:
abrasive
'scratchy' is the definition.
(synonyms)
This is all the clue.
(Other definitions for abrasive that I've seen before include "Rough and scratchy" , "Pumice, for example" , "Emery paper or steel wool, say" , "Harsh - chafing" , "Harsh, causing angry feelings" .)