私怨

personal enmity

结怨

incur resentment

我们无怨无仇。

There's no enmity between us.

怨命不好

complain about one's lot

用不着怨别人

blaming others is pointless

别怨他，这是我的错。

It's my fault, don't put the blame on him.

你只能怨自己。

You only have yourself to blame.

死而无怨

die with no regrets

脸丑别怨镜子歪。

Don't blame the mirror for your ugly face.

怨做事颟顸

complain about one's careless work