Foolishly sentimental (7)
(Other definitions for mawkish that I've seen before include "Falsely sentimental" , "Feebly sentimental" , "Cloying" , "Sentimental in maudlin way" , "Effusively or insincerely emotional" .)
'foolishly sentimental' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for maudlin that I've seen before include "Schmaltzy" , "Sloppily sentimental, perhaps due to drink" , "Over-emotional" , "Foolishly sentimental, mushy" , "Effusively or insincerely emotional" .)