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A proclivity is a tendency to behave a certain way, or to like a certain thing — and English almost always colours it as a bit bad, or at least something you might not boast about. A proclivity for gossip, for late nights, for picking fights. It is a , dry word. In speech most people say tendency, habit, or “a thing for.” Though actually, it is not only for crimes; newspapers use it for any leaning they want to paint as . It is countable: a proclivity, proclivities. If you tell someone they have one, they will hear a raised .
癖性、不良傾向（偏負面；中文「癖好」有時偏中性，這裡通常不是稱讚）
組成From Latin proclivitas, from proclivis, “sloping forward / prone to”: pro- “forward” + clivus “slope.” The picture is a person already leaning that 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。
proclivitynoun/pɹəʊˈklɪvɪti/
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A predisposition or natural inclination, propensity, or a predilection; especially, a strong disposition or bent.
- The child has a proclivity for exaggeration.
- This therefore was the reason why the still comparatively young though dissolute man who now addressed Stephen was spoken of by some with facetious proclivities as Lord John Corley.
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。