This is the 15805th most frequent Polish word.
słodko
Sweetly.
Here, 'słodko' is used as an adverb describing the way the cake tastes.
Ciasto smakuje słodko.
The cake tastes sweet.
In this sentence, 'słodko' is used as part of the expression 'za słodko' indicating excessive sweetness.
Skarżyła się, że było za słodko.
She complained that it was too sweet.
Here, 'słodko' is used to describe the manner in which the action of sitting was performed, implying grace or charm.