mawkish

imelä, äitelä puhekieltä Feeling sick, queasy.
puhekieltä sickening Sickening or insipid in taste or smell.
Excessively or falsely sentimental; showing a sickly excess of sentiment.
2014 August 11, w:Dave Itzkoff, "http://www.nytimes.com/2014/08/12/movies/robin-williams-oscar-winning-comedian-dies-at-63.html?ref=obituaries Robin Williams, Oscar-Winning Comedian, Dies at 63 in Suspected Suicide," New York Times

Some of Mr. Williams’s performances were criticized for a mawkish sentimentality, like “Patch Adams,” a 1998 film that once again cast him as a good-hearted doctor, and “Bicentennial Man,” a 1999 science-fiction feature in which he played an android.