エイ
するど.い
鋭, 金, 兌, 八, 兄, 口, 儿, 丿
金
pointed, sharpness, edge, weapon, sharp, violent
鋭い(するどい): (1) sharp (blade); pointed (2) sharp (pain); stabbing; cutting (remark); stinging; pointed (question or look); screeching (noise) (3) perceptive; keen; quick (mind); astute; shrewd; discerning (4) nimble; agile; quick