他曾是一个狂野、放纵、不讲道德的年轻人。

He was a wild, intemperate, immoral youth.

youdao

别借钱给他，他是个不讲道德的人，他不会还你钱的。

Don't lend him any money; he's a bad hat and will never repay you.

youdao

现在的年轻人根本不讲道德。

Young people these days have no morals.

《牛津词典》

Why not think about creating positive situations ? that will help us lead happier, more moral lives?

为什么不创造积极的环境,让我们获得更快乐更讲道德的生活？

哈佛公开课 - 幸福课课程节选

Therefore, when he is without virtue, man is the most unscrupulous and savage of the animals."

因此,一旦失去美德,人就是最不讲道德最为凶残的野兽"

耶鲁公开课 - 古希腊历史简介课程节选