1. having the thick, sticky consistency of treacle or syrup
2. excessively sweet or sentimental in a cloying way
Usage: often disapproving

Examples

• The sauce had become treacly after simmering for hours.
• She poured the treacly golden syrup over her pancakes.
• The movie’s treacly dialogue made the audience cringe.
• His treacly compliments seemed insincere and overdone.
• The treacly consistency of the honey made it difficult to pour.
• Critics dismissed the novel as treacly romance fiction.
• The treacly sweetness of the dessert was overwhelming.