Schmaltzy (7)
'schmaltzy' is the definition.
(I know that schmaltzy can be written as mawkish)
This is all the clue.
(Other definitions for mawkish that I've seen before include "Insipid; maudlin" , "Effusively or insincerely emotional" , "Sentimental in maudlin way" , "Soppy" , "Sentimental, schmaltzy" .)
(Other definitions for maudlin that I've seen before include "Soppy, lachrymose" , "Tearfully sentimental, probably drunk" , "Weepy (and intoxicated?)" , "Effusively or insincerely emotional" , "Foolishly sentimental, mushy" .)