Cloying

"cloy

kloi/

gerund or present participle: cloying

1. disgust or sicken (someone) with an excess of sweetness, richness, or sentiment.
   
   

   "a romantic, rather cloying story"

   synonyms:

   sickly, syrupy, saccharine, oversweet;  sickening, nauseating;  mawkish, sentimental, twee;  informalover the top, mushy, slushy, sloppy, gooey, cheesy, corny, cornball, sappy"