rightfully
adv. 正当地；正直地
例句
She was only claiming what was rightfully hers.
她只要求得到理应属于她的东西。
《牛津词典》
Jealousy is the feeling that someone else has something that rightfully belongs to you.
嫉妒是一种认为别人占有了本应属于自己的东西的情感。
《柯林斯英汉双解大词典》
We want more for our kids, and rightfully so.
我们希望我们的孩子能得到更多，这是理所当然的。
