1.
If you describe someone as ~, you mean that they are being sad and sentimental in a foolish way, perhaps because of drinking alcohol.
Jimmy turned ~ after three drinks.
...~ self-pity.
ADJ
2.
If you describe a song, book, or film as ~, you are criticizing it for being very sentimental.
...the most ~ song of all time.
...a hugely entertaining (if over-long and ~) movie.
ADJ disapproval