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.

Indisciplineindiscipline is a lack of control in a group指的是一個團體裡失去了控制，so that people start behaving badly讓大家開始亂來——a class that will not sit坐不住的班級、a team that will not follow the plan不照計畫走的隊伍、soldiers who stop obeying orders不服從命令的士兵。It names the missing control as a thing它把這種「缺乏控制」當成一件事情來命名。

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.

Writers use it more about groups than about one person作家用這個字比較常講團體，比較少講單一個人；for one person講一個人的時候，English more often uses the adjective undisciplined英文更常用形容詞undisciplined。It sounds official它聽起來很正式：teachers, officers, and news writers use it老師、軍官和新聞寫手會用。

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.

Though actually不過實際上，in everyday talk many people never say this noun at all日常對話裡很多人根本不會說這個名詞。They say他們會說「"there is no discipline"沒有紀律」or「"they are out of control."他們失控了」。You will meet indiscipline in reports and school notices你在報告和學校公告裡遇到indiscipline，more than at the dinner table比在餐桌上遇到多得多。