SACCHARINE= (adjective) 1 excessively sweet or sentimental. 2 too pleasant or charming, with too much feeling to be believed

Synonyms:
ingratiating, sweet, sugary, syrupy, sugar-coated, oversentimental, cloying

Antonyms:
sour, bitter

Examples:
- The actresses’ speech at the Oscars was so saccharine, I could hardly stomach it.
- My girlfriend loved the movie but I thought it was ruined by its saccharine-sweet ending.
- Frank was always very nice, but his sweetness sometimes bordered on saccharine.
- The movie was funny, but it had a saccharine ending in which everyone lives happily ever after

PREEN= (verb) 1 (of a bird) tidy and clean its feathers with its beak. 2 devote effort to making oneself look attractive. 3 (preen oneself) congratulate or pride oneself. 1. to dress or adorn oneself with great care; 2. what birds do when
they clean their feathers with their beaks; 3. what cats do when they
groom themselves; 4. to feel and/or act very self-satisfied and
self-congratulatory. to feel very proud or satisfied with yourself because of an action or quality:

Synonyms:
groom, primp, dress, adorn, spruce, gloat, self-congratulating

Examples:
- My boss thinks that people who preen themselves on a job well done are annoyingly self-satisfied and smug.
- My cat sat on the windowsill preening herself for hours.
- Bill sometimes preens himself on his ability to effectively deal with clients and co-workers.
- The girls preened all day in preparation for prom night.
- The government is publicly preening itself on the latest trade figures.