Definitions for "Cloying"
A sweet wine without a sufficient amount of acidity to balance the sweetness will often taste so sweet as to be cloying.
Excessive sugar component annoys with dominating flavour and aftertaste. The wine is then demonstrably unbalanced relative to the other components.
In tasting wine, if the acid is not high enough to balance the sugar, the wine is sometimes referred to as cloying.