- finely sharpened, as an edge; so shaped as to cut or pierce substances readily: a keen razor.
- sharp, piercing, or biting: a keen wind;keen satire.
- characterized by strength and distinctness of perception; extremely sensitive or responsive: keen eyes;keen ears.
- having or showing great mental penetration or acumen: keen reasoning;a keen mind.
- animated by or showing strong feeling or desire: keen competition.
- intense, as feeling or desire: keen ambition;keen jealousy.
- eager; interested; enthusiastic; (often followed by about, on, etc., or an infinitive): She is really keen on going swimming.
- great; wonderful; marvelous.
- a wailing lament for the dead.
- to wail in lamentation for the dead.
- to mourn for by or with such keening or wailing: keening his mother while kneeling at her grave.
- eager or enthusiastic
- fond (of); devoted (to)
- intellectually acute
- (of sight, smell, hearing, etc) capable of recognizing fine distinctions
- having a sharp cutting edge or point
- extremely cold and penetrating
- intense or strong
- extremely low so as to be competitive
- very good
- to lament the dead
- a dirge or lament for the dead
