1 sentence for 辯 (biàn — argue)

1. 既然你已经认错了，就没必要再辩了。

   jì​rán nǐ yǐ​jīng rèn​cuò le, jiù méi bì​yào zài biàn le.

   Since you've already admitted your mistake, there's no need to argue further.

   Source: Dong Chinese Dictionary