In a way that is pleasing to the senses, especially to the taste or smell. The flowers smelled sweetly in the garden.
In a kind, gentle, or affectionate manner. The baby smiled sweetly at her mother.
In a smooth, melodious, or agreeable way (especially of music or sound). The flute played sweetly throughout the piece.
Informal: in a very satisfactory or delightful manner; perfectly. Everything came together sweetly in the end.