Of cold, wind, etc.: cutting, penetrating, piercing, sharp.
Often with a prepositional phrase, or with to and an infinitive: showing a quick and ardent responsiveness or willingness; eager, enthusiastic, interested.
Acute of mind, having or expressing mental acuteness; penetrating, sharp.
Having a fine edge or point; sharp.
Of prices, extremely low as to be competitive.
Acrimonious, bitter, piercing.
Fierce, intense, vehement.
To utter with a loud wailing voice or wordless cry.
To mourn.
To make cold, to sharpen.
To utter a keen.
A prolonged wail for a deceased person.
dulled or intentionally blunt.
out of focus; blurry.
To sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original.