sweet

Tasting of sugars.

a sweet apple

A few types of molecules get sensed by receptors on the tongue. Protons coming off of acids ping receptors for "sour." Sugars get received as "sweet." Bitter, salty, and the proteinaceous flavor umami all set off their own neural cascades.

Retaining a portion of sugar.

Sweet wines are better dessert wines.

Not of a salty taste.

sweet butter

Of a pleasant smell.

a sweet scent

Though the breath of these flowers is sweet to me, / I will give them all back again.

Not decaying, fermented, rancid, sour, spoiled, or stale.

sweet milk

Used as a positive response to good news or information.

They're making a sequel? Ah, sweet!

In a pleasant manner.

Go down beside thy native rill, ⁠On thy Parnassus set thy feet, ⁠And hear thy laurel whisper sweet About the ledges of the hill.