keening
词形变化：
副词: keenly | 形容词比较级: keener | 形容词最高级: keenest | 名词: keenness | 动词过去式: keened | 动词过去分词: keened | 动词现在分词: keening | 动词第三人称单数: keens |
同义词：
sharp | quick | eager | intense | competitive | acute | sensitive | icy | bitter | cutting | fine | bright | exact | smart | clever | sharp-witted | knifelike | piercing | corking | nifty | bully | lament | bang-up | cracking | dandy | penetrative | discriminating | stabbing | not bad | exquisite | penetrating | lancinate | peachy | smashing | great | swell | groovy | neat | lancinating | incisive | slap-up | anxious | shrewd |
反义词：