disown|disowned

当他宣布要成为一名演员时，他的父亲威胁要与他断绝关系。

When he announced he wanted to be an actor, his father threatened to ___disown him.

父母拒绝承认那个行为不端的儿子。

The parents ___disowned their misbehaving son.

他否认与这个罪犯有任何关系。

He ___disowned any connection with the criminal.