形容词

1. 合适的;恰当的;应有的
If you say that someone or something has returned to its rightful place or position, they have returned to the place or position that you think they should have.

rightfully
Jealousy is the feeling that someone else has something that rightfully belongs to you...
嫉妒是觉得别人拥有本该属于你的东西。
She's inherited the money which is rightfully hers...
她继承了本应属于她的钱。
Killing a police officer is something that's taken very seriously and rightfully so.
杀警被视为严重的犯罪，而且理应如此。