早年的用法（現在不用了）
這是同一個字更早的一層：以前被當成正式的分類詞，後來被拿去罵人，語言社群就把它從正式場合退下來了；今天讀舊文件才會遇到。
person with low intelligence (dated) · noun · B2
An old, hurtful word once used for a person with very low intelligence — this meaning is not used today.
（舊用法）低能者
核心畫面
Picture the word someone throws out the second after a silly mistake — a door locked with the keys inside, a car cutting across three lanes. It aims at the person, not the action, which is why it stings: it is a name-calling word, and today it lives almost entirely in that quick, heated, spoken moment.
可以想成：有人做了一件蠢事的下一秒，旁邊脫口而出的那個詞——鑰匙鎖在車裡、有人硬切三個車道。它罵的是「人」不是那件事…更多收起
可以想成：有人做了一件蠢事的下一秒，旁邊脫口而出的那個詞——鑰匙鎖在車裡、有人硬切三個車道。它罵的是「人」不是那件事，所以才傷人。這個字今天幾乎只活在這種當下、情緒上來的口語場合裡，是一個帶攻擊性的稱呼。From the picture
Also in this word
fool · noun · B2
A person who has done something silly, or who is behaving in a foolish way — an insulting word.
笨蛋／白痴
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。
IDiotnoun
- 1
derogatoryslangA proponent of intelligent design.
- In his moronic book, _The Design Revolution: Answering the Toughest Questions about Intelligent Design_ (2004), 334pp., the IDiot William Dembski writes on page 305 about how a fellow IDiot was fired from a research position at a "prestigious molecular biology laboratory" the very same day a press story appeared exposing this character as being an IDiot.
- Nor does any sane or rational person believe any enzyme fell together all at once purely by chance - that is the domain of creotards, IDiots, and theoloons.
idiotnoun/ˈɪdiət/
- 1
derogatoryA person of low general intelligence.
- Only an idiot would fail this exam.
- After failing a hat-trick of exams, the teacher called him an idiot.
- 2
derogatoryA person who makes stupid decisions; a fool.
- He thought people who don't like cricket are idiots. He later got into fights with people who like football.
- We think that people who cycle without a helmet are idiots.
- 3
obsoletehuman-sciencesmedicinepsychologyA person of the lowest intellectual standing, a person who lacks the capacity to develop beyond the mental age of a normal four-year-old; a person with an IQ below 30.
- Idiots were thought to be peculiarly under the care of the Deity, and it was believed that those who treated them kindly would be blessed.
- It is an offence for a man to have unlawful sexual intercourse with a woman whom he knows to be an idiot or imbecile.
idiotadj/ˈɪdiət/
- 1
Idiotic, stupid.
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。