rightful

adjectives

legally valid
"a rightful inheritance"
rightful
is derived from
rightfulness
is similar to
used especially of what is legally or ethically right or proper or fitting
"a just and lasting peace"- A.Lincoln; "a kind and just man"; "a just reward"; "his just inheritance"
just
having a legally established claim
"the legitimate heir"; "the true and lawful king"
lawful, rightful, true
is derived from
rightfulness