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A blackguard is a man who treats people badly on purpose — cruel, dishonest, or without shame. The word is old-fashioned now. Young people almost never say it in ordinary talk; you meet it in older books and plays, or when someone insults a man in a slightly theatrical, old-fashioned voice. It still feels strong. Though actually, nobody says it the way it looks. It is not “black-guard”. People squash it to something like “blaggard”. In old writing it can also be a verb: to blackguard someone is to throw ugly names at them. The pieces are black + guard. It is thought to have first pointed at the lowest kitchen servants in a court or a big house — the ones who wore dark work clothes, or whose shoes and hands were stained with soot — and then the name slid from “low dirty worker” to “low bad man”.
惡棍、無賴（老派罵人的話；不是「黑色衛兵」，讀音也不照拼法）
組成black + guard. Probably first the lowest servants of a court or noble house, in black work clothes or stained with soot; later, a man of low, bad character.
同家族的字
- bodyguardshares guard, but bodyguard is a person who protects someone — a very different job
原始詞典資料5 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。
blackguardnoun/ˈblæɡəd/
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historicalThe lowest servant in a household charged with pots, pans, and other kitchen equipment.
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datedAn unprincipled, contemptible person; an untrustworthy person.
- 1830, Thomas Macaulay, Review of Robert Southey's edition of Pilgrim's Progress, in the Edinburgh Review A man whose manners and sentiments are decidedly below those of his class deserves to be called a blackguard.
- Pawn another man's property for the sake of a meal, eat and drink one's self to perdition, brand one's soul with the first little sear, set the first black mark against one's honour, call one's self a blackguard to one's own face, and needs must cast one's eyes down before one's self? Never! never!
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archaicA man who uses foul language in front of a woman (typically a woman of high standing).
blackguardverb/ˈblæɡəd/
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To revile or abuse in scurrilous language.
- Persons who passed each other in boats upon the Thames used to blackguard each other, in a trial of wit
- The Southern Region takes, in the main, a candid line with its public. […] An ill-informed attempt to blackguard the railway publicly is likely to see the complainant put politely—but very firmly—in his place.
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To act like a blackguard; to be a scoundrel.
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。