Definitions

1. noun

the state or quality of being excessively enthusiastic or sentimental, especially in an insincere or overbearing way

“The movie’s excessive gushiness about the hero’s bravery made it hard to take seriously.”

2. noun

a quality of being excessively or annoyingly effusive or enthusiastic

“The politician’s gushiness on the campaign trail was seen as insincere by many voters.”