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A sagacious person understands a situation and judges it well — not only book-smart, but sharp about people, choices, and what is likely to happen. You might call a leader sagacious, or a grandmother, or a quiet remark that turns out to be right. It is a high, word. You will meet it in novels and speeches far more than at the night market. Though actually, sagacious is stronger than clever. Clever can be quick and a bit ; sagacious is deep, patient, and trusted. When someone says “how sagacious” with a smile, they may be teasing, because the word sounds so grand. Formal English. A kind teacher in real talk would just say wise, or “she reads people well.”
睿智的、有見識的（很文言；日常比較說「很有眼光」）
組成Coined between 1600 and 1610. Borrowed from Latin sagāx (“keen, of quick perception”) + -acious (“full of that quality”).
同家族的字
- sagacitythe noun: the good judgment itself
- sagaciouslythe adverb: in that wise, sharp-judging way
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
sagaciousadj/səˈɡeɪʃəs/
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formalHaving or showing keen discernment, sound judgment, and farsightedness; mentally shrewd.
- I resort, once again, to a sagacious adage from Justice Scalia […]
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。