Treacly
/ˈtriːkli/
Definition 1 of 1
Pro Tip 1/3Emotional Overload
Use 'treacly' when something feels overwhelmingly emotional, to a point it might seem insincere. 
His treacly praise made the audience uncomfortable.
Pro Tip 2/3Negative Connotation
Although 'treacly' relates to sweetness, it implies something negative, like being excessive or fake. 
The treacly speech didn't impress the judges.
Pro Tip 3/3Cultural Usage
In some cultures, 'treacly' can refer to cultural products that are seen as overly traditional or outdated. 
The tourists found the treacly souvenirs kitschy, yet charming.