Uncouth man (4)
I believe the answer is:
lout
'uncouth man' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for lout that I've seen before include "A noisy coarse youth" , "Boor, roughneck" , "Lob" , "'Buffoon, oaf (4)'" , "A noisy, badly-behaved youth" .)