Plainly
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saccharine
nounsuh-KAR-in
meaning in plain English
A kind of overly sweet, cloying feeling or style that tries to make you feel warm and happy.
Picture a candy coated hug - saccharine, so sweet it feels fake but tries to warm you up.
for example
The movie was full of saccharine, and I stopped caring about the characters.
Think of a birthday card that uses way too many cute sayings and makes everything sound like a sugary hug—that's saccharine. It's the fake, mushy feeling that can feel a little forced.