schmaltz
I thought of Valentine's Day as a schmaltzy waste of paper.
This book is so schmaltzy.
It sounds schmaltzy but he says it with tremendous warmth.
They sang schmaltzy ballads at wedding receptions.

SMART Vocabulary: related words and phrases

Sentimental and over-emotional
cloying
cloyingly
gauzily
gushily
gushy
mawkishness
mush
mushily
mushy
sappiness
sentimentalist
sentimentality
sick-making
sloppily
sloppiness
slushy
syrupy
treacly
twee
tweeness

schmaltzy | American Dictionary

schmaltzy
adjective
 infmldisapproving(alsoschmalzy)us/ˈʃmɑlt·si, ˈʃmɔlt-/
causing extreme emotions of love or sadness, esp. in the arts:
They spend a lot of time together listening to schmaltzy love songs.

schmaltz

noun[ U ](alsoschmalz)us/ʃmɑlts, ʃmɔlts/
infml
His writing is full of schmaltz.