Tearfully sentimental (7)
I believe the answer is:
maudlin
'tearfully sentimental' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for maudlin that I've seen before include "Over-emotional" , "Schmaltzy" , "Tearfully sentimental, probably drunk" , "Mushy and emotional" , "Effusively or insincerely emotional" .)