Uncouth; harsh (6)
I believe the answer is:
coarse
This clue is a double definition.
'uncouth' is the first definition.
(I know that uncouth can be written as coarse)
'harsh' is the second definition.
(I've seen this in another clue)
(Other definitions for coarse that I've seen before include "Boorish" , "Rude, vulgar" , "Vulgar; not fine" , "Unpolished -- ribald" , "Rough-hewn" .)