"Poor" guy (4)
I believe the answer is:
slob
'poor guy' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for slob that I've seen before include "Slovenly, dirty type" , "Slovenly person (colloq.)" , "Unattractive person" , "Uncouth person" , "Fat, idle type" .)