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Indiscipline is a lack of control in a group, so that people start behaving badly — a class that will not sit, a team that will not follow the plan, soldiers who stop obeying orders. It names the missing control as a thing. Writers use it more about groups than about one person; for one person, English more often uses the adjective undisciplined. It sounds official: teachers, officers, and news writers use it. Though actually, in everyday talk many people never say this noun at all. They say “there is no discipline” or “they are out of control.” You will meet indiscipline in reports and school notices more than at the dinner table.
缺乏紀律；紀律渙散
組成From French indiscipline, from Late Latin indisciplina (in- “not” + disciplina “discipline”).
同家族的字
- disciplinethe control and training that is missing here
- undisciplinedthe usual adjective for a person who will not keep to rules
- disciplinaryabout punishing or correcting bad behaviour
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。
indisciplinenoun
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Lack of discipline.
- [O]ur delay, and other things which happened, were proofs—and I was told not uncommon ones—of that carelessness, unreadiness, and general indiscipline of French arrangements, which has helped to bring about, since then, an utter ruin.
- Germany feared that the fiscal indiscipline of countries like Italy and Greece could make the new euro currency unstable.
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。