To lessen the intensity of, to mitigate or relieve (hunger, emotion, pain etc.).
To pacify or soothe (someone).
To reduce in size, force, value, amount, or degree.
To reduce the amplitude of an electrical, radio, or optical signal.
To weaken.
To become thin or fine; to grow less.
To rarefy.
(of a beer) To become less dense as a result of the conversion of sugar to alcohol.
To reduce the virulence of a bacterium or virus.
To make thinner, as by physically reshaping, starving, or decaying.
Gradually tapering into a petiole-like extension toward the base.