sentimental vs sappy

sentimental and sappy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sentimental	No	Yes	No	No
sappy	No	Yes	No	No

As adjectives, sentimental and sappy are synonyms defined as:

Other synonyms of sentimental include bathetic, drippy, hokey, kitschy, maudlin, mawkish, mushy, schmaltzy, schmalzy, slushy, soppy, soupy.

sentimental (adjective)	sappy (adjective)
effusively or insincerely emotional	effusively or insincerely emotional
given to or marked by sentiment or sentimentality	abounding in sap