Messy type (4)
I believe the answer is:
slob
'messy type' 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 "Boor" , "Fat, idle person" , "Untidy and lazy person" , "'Slovenly, messy person (4)'" , "Uncouth person" .)