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A complaisant person is willing — even eager — to do what will please other people. They go along, they make it easy, they do not make a fuss. It can be a quiet compliment (kind, easy to be with) or a quiet criticism (too ready to please, not holding a line of their own). This is formal, rather old-fashioned English. Most people today would say easy-going, eager to please, or too agreeable. Do not mix it up with complacent, which is the trap this word is famous for. Complacent people look too satisfied with themselves and stop trying. Complaisant people try to satisfy others. They come from the same old Latin idea of “pleasing well,” but they walked off in different directions, and a teacher who cares will keep them apart. You will mainly see this word in books, not in chat.
殷勤的、樂於討好別人的（文雅；極易和 complacent「自滿的」搞混）
組成From French complaisant (“willing to please”), from complaire, from Latin com- (“with”) + placeō (“please”).
同家族的字
- complaisancethe noun: that willingness to please
- complaisantlythe adverb
- pleasesame Latin root placeō, “to please”
原始詞典資料3 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。
complaisantadj/kəmˈpleɪsənt/
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Compliant.
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Willing to do what pleases others; obliging; agreeable.
- Replay our conversation You threw your accusations I'm always so complaisant I never change the station
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archaicPolite; showing respect.
- The People who had often heard of me, were very curious to croud about the Sedan, and the Girl was complaiſant enough to make the Bearers ſtop, and to take me in her Hand that I might be conveniently ſeen.
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。