Dictionary Definition

sweeten

1 make sweeter in taste [syn: dulcify, edulcorate, dulcorate] [ant: sour]

2 make sweeter, more pleasant, or more agreeable; "sweeten a deal"

User Contributed Dictionary

To make sweet to the taste; as, to sweeten tea.
To make pleasing or grateful to the mind or feelings; as, to sweeten life; to sweeten friendship.
To make mild or kind; to soften; as, to sweeten the temper.
To make less painful or laborious; to relieve; as, to sweeten the cares of life.

And sweeten every secret tear. - Keble.
To soften to the eye; to make delicate.

Correggio has made his memory immortal by the strength he has given to his figures, and by sweetening his lights and shadows, and melting them into each other. - Dryden.
To make pure and salubrious by destroying noxious matter; as, to sweeten rooms or apartments that have been infected; to sweeten;;; the air.
To make warm and fertile; — opposed to sour; as, to dry and sweeten soils.
To restore to purity; to free from taint; as, to sweeten''' water, butter, or meat.
To make more attractive; — said of offers in negotiations, as, to sweeten the deal by increasing the price offered.
To become sweet.