Disown
Disown , transitive verb
1.
To refuse to own or acknowledge as belonging to one's self; to disavow or deny, as connected with one's self personally; as, a parent can hardly disown his child; an author will sometimes disown his writings.
2.
To refuse to acknowledge or allow; to deny.
Then they, who brother's better claim disown,
Expel their parents, and usurp the throne.