名詞 sagacity:

1. the mental ability to understand and discriminate between relations
   同義詞：sagaciousness, judgment, judgement, discernment
2. the trait of forming opinions by distinguishing and evaluating
   同義詞：judiciousness, sagaciousness

1. The judge has excellent sagacity.
   那個法官有敏銳的洞察力。
2. Sagacity, unlike cleverness, may increase with age.
   睿智與機靈不同，前者可隨著年齡增加。