Sentimentality (noun)

1. The quality of being overly emotional or sentimentally sentimental, especially in a way that is considered excessive or insincere.
2. The indulgence in or display of emotion, especially in an insincere or excessive way.

Origin:

From the latin word "sentire" which means to feel or to perceive and "sentiment" which means an emotional state or a feeling.

Examples:

1. The movie was criticized for its sentimentality and lack of substance.
2. The speech was filled with sentimentality, tugging at the heartstrings of the audience.
3. The novel was accused of being overly sentimental and saccharine.
4. The artwork was praised for its sentimentality and evocative emotions.
5. She was often accused of sentimentality, as she tended to wear her heart on her sleeve.