recklessness

He soon regretted his recklessness.

他不久便后悔他的鲁莽。

The headstrong recklessness of youth may be fine in some areas, but not behind the wheel of a car.

年轻人在一些方面任性鲁莽一点也许没什么大不了，但是在驾车时可不行。

His maverick nature is forever leading him into tricky situations but despite his recklessness, he has an inherent sense of responsibility and will try to make amends for the chaos he causes.

而“离经叛道”的个性总是让他陷入困境，虽有些鲁莽，但凭借与生俱来的责任感，他总是想方设法修复自己造成的混乱局面。