He bitterly regretted his rashness.

他对自己的莽撞极其后悔。

Don't hurry, must rashness.

不要急着要，一定要戒躁。

It is a form of rashness, he says.

他说这是一种鲁莽。

She hinted at his rashness.

她暗示过他的鲁。

He expostulated with me on my rashness.

他劝诫我别鲁莽。