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A ratbag is an unpleasant person — , badly behaved, or not to be trusted. It is mainly Australian and New Zealand English, informal, a little old-fashioned but still heard. It can be fairly soft, for a cheeky child or a nuisance, or quite sharp, for a real pest. It comes from rat + bag: a nasty bundle, a bag of rats. You do not picture a real bag of rats in daily life; it is just the insult. Americans hardly use it; they might say jerk or pain instead. It can be half-fond when said of someone you know, the way rascal can, but from a stranger it stings.
討厭鬼、混帳東西（澳、紐口語）
組成From rat + bag.
同家族的字
- ratthe animal, also used as an insult for a nasty or disloyal person
原始詞典資料2 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。
ratbagnoun/ˈɹæt.bæɡ/
- 1
slangA despicable person.
- Then he went and sneaked on me to my boss. What a ratbag!
- 2
slangA mischievous person, especially a child.
- He says he was a ratbag at school and the entire teaching staff hated him except the English and economics teachers.
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。