See sweet in Webster's New World College Dictionary
adjective
having a taste of, or like that of, sugar
containing sugar in some form: sweet wines
having a generally agreeable taste, smell, sound, appearance, etc.; pleasant
agreeable to the mind; gratifying: sweet praise
having a friendly, pleasing disposition; characterized by kindliness and gentleness: a sweet girl
dear: formerly a polite form of address: sweet sir
sentimental, saccharine, or cloying
Slang good, delightful, etc.: a generalized epithet of approval
not rancid, spoiled, sour, or fermented: sweet milk, sweet cider
not salty or salted: said of water or butter
free from sourness or acidity: said of soil
Chem.
free from unpleasant odors and gases
purified and free from acid, corrosive elements, etc.
Jazz designating or of music or playing characterized by more or less strict adherence to melody, sentimentality or blandness in tone and rhythm, and a moderate tempo
noun
the quality of being sweet; sweetness
sweet foods
Chiefly Brit. a piece of candy, or a sweet dessert
something, as an experience, that gives delight or satisfaction: usually used in pl.: the sweets of victory