Keen
Part of speech: verb
Definition: To sharpen; to make cold. To utter a keen.
Part of speech: noun
Definition: A prolonged wail for a deceased person.
Part of speech: adjective
Definition: sharp; having a fine edge or point. acute of mind; sharp; penetrating; having or expressing mental acuteness. bitter; piercing; acrimonious; cutting; stinging; severe; as, keen satire or sarcasm. piercing; penetrating; cutting; sharp; -- applied to cold, wind, etc,; as, a keen wind; the cold is very keen. eager; vehement; fierce; as, a keen appetite. Enthusiastic Marvelous.
Example sentence: Intervention only works when the people concerned seem to be keen for peace.
Perceptive
Part of speech: adjective
Definition: having or showing keenness of perception, insight, understanding, or intuition
Example sentence: I think that being perceptive and having interests is nothing but an asset.