adjective
(chiefly Commonwealth) Often with a prepositional phrase, or with to and an infinitive: showing a quick and ardent responsiveness or willingness; eager, enthusiastic, interested.
Fierce, intense, vehement.
Having a fine edge or point; sharp.
Acute of mind, having or expressing mental acuteness; penetrating, sharp.
Acrimonious, bitter, piercing.
Of cold, wind, etc.: cutting, penetrating, piercing, sharp.
(British) Of prices, extremely low as to be competitive.
(US, informal, dated) Marvelous.
(obsolete) Brave, courageous; audacious, bold.
verb
(transitive, rare) To make cold, to sharpen.
noun
A prolonged wail for a deceased person.
verb
(intransitive) To utter a keen.
(transitive) To utter with a loud wailing voice or wordless cry.
(transitive) To mourn.