Sloppily sentimental (6)
I believe the answer is:
drippy
'sloppily sentimental' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for drippy that I've seen before include "Sloppily sentimental" , "Mawkish - leaking?" , "Would a slow leak be" , "silly?" , "wet" .)