sappy

Something sappy lacks substance. It's silly, foolish, and overly sentimental.

Have you ever heard someone refer to a sappy song? That's not a compliment, because anything sappy is considered cheesy, saccharine, clich├ęd, ludicrous, or goofy. Serious or excellent art would never be called sappy. Greeting cards are often sappy, as is someone saying "I wuv you" to his dog. In the 1550s, sappy meant "full of vitality," but by the end of the 1600s its meaning changed to "foolishly sentimental," possibly influenced by the stickiness of sap.

Definitions of sappy
1

adj abounding in sap

sappy maple trees”
sappy kindling wood”
Synonyms:
juicy
full of juice

adj ludicrous, foolish

Synonyms:
cockamamie, cockamamy, goofy, silly, wacky, whacky, zany
foolish
devoid of good sense or judgment

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