狡辩

In a sentence

• 他经常为自己的错误狡辩，试图逃避责任。

  He often makes excuses for his mistakes, attempting to evade responsibility.

  This sentence uses '狡辩' to describe providing arguments for avoiding blame or explaining away mistakes.

• 每次被指出问题时，他都会狡辩说情况不是那样。

  Every time he is pointed out an issue, he argues that the situation isn't as stated.

  Here, '狡辩' is used to express arguing against accusations, often in a defensive manner, even if wrong.

• 狡辩并不能掩盖事实，只会增加别人的质疑。

  Making fallacious arguments cannot mask the facts; it will only increase others' doubts.

  This usage indicates that '狡辩' refers to attempts to disguise facts with explanations or excuses, generally perceived negatively.