perspicacity

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It was a marvellous effort of perspicacity to discover that I did not love her.
真是费了不少的劲才发现我本来就不爱她。
Using an obscure word incorrectly can be deleteriousto your illusion of perspicacity.
错误地使用模糊的词语可以破坏别人对你语言敏锐的假象。
Her characteristics can be summarized in three words: perspicacity, righteousness and simplicity.
简而言之，刘姥姥形象的特征可用三个字来概括，即智、义、朴。

What you've created is threatening to destroy the sidewalk with its rhythmic audacity and funky perspicacity.
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Seven years ago, in a Four Seasons Hotel van with Bill Gates, I became involved in a heated argument over Gil-der's perspicacity.
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Scarcely more comprehensible is the argument that Germany must refrain from recognizing Croatia and Slovenia simply because other leading nations lack the courage or perspicacity to take this step.
CENTERFORSECURITYPOLICY: Center For Security Policy