undisciplined 

英汉解释

adj. 无训练的；混乱无纪律的

同义词

a. uncorrected，ungoverned

参考例句

1. You will pay for your improvident and undisciplined behavior.
你会为自己轻率任性的行为付出代价的。
2. Because there is no definite teaching: the world is undisciplined.
因为不存在明确的教诲：世界未经规范。
3. He had never been truly irresponsible; but he had been undisciplined, selfish, and ruthless.
他从来就有真诚的责任感，但他又很不安分，自私，无情。

英英解释

adj.
  1. not subjected to discipline
  2. not subjected to correction or discipline
  3. lacking in discipline or control

网络释义

undisciplined
无训练的; 混乱无纪律的; 训练不足的; 无修养的;
disrespectful and undisciplined behavior
无礼和无修养的行为;