"a sharp photographic image"
"the sharp crack of a twig"
"the crisp snap of dry leaves underfoot"
"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"
"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"
"sharp criticism"
"a sharp-worded exchange"
"a tart remark"
"a shrill whistle"
"a shrill gaiety"
"an abrupt canyon"
"the precipitous rapids of the upper river"
"the precipitous hills of Chinese paintings"
"a sharp drop"
"a sharp pain"
"sharp winds"
"a sharp knife"
"a pencil with a sharp point"
"C sharp"
"a sharp drop in the stock market"
"a sharp blow"
"the road twists sharply after the light"
"turn sharp left here"
"the visor was acutely peaked"
"her shoes had acutely pointed toes"
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