sharp

a musical notation indicating one half step higher than the note named

(of something seen or heard) clearly defined; "a sharp photographic image"; "the sharp crack of a twig"; "the crisp snap of dry leaves underfoot"

ending in a sharp point

having or demonstrating ability to recognize or draw fine distinctions; "an acute observer of politics and politicians"; "incisive comments"; "icy knifelike reasoning"; "as sharp and incisive as the stroke of a fang"; "penetrating insight"; "frequent penetrative observations"

marked by practical hardheaded intelligence; "a smart businessman"; "an astute tenant always reads the small print in a lease"; "he was too shrewd to go along with them on a road that could lead only to their overthrow"

harsh; "sharp criticism"; "a sharp-worded exchange"; "a tart remark"

having or emitting a high-pitched and sharp tone or tones ; "a shrill whistle"; "a shrill gaiety"

extremely steep; "an abrupt canyon"; "the precipitous rapids of the upper river"; "the precipitous hills of Chinese paintings"; "a sharp drop"

very sudden and in great amount or degree; "a sharp drop in the stock market"

changing suddenly in direction and degree; "the road twists sharply after the light"; "turn sharp left here"; "the visor was acutely peaked"; "her shoes had acutely pointed toes"