dis ‧ own /dɪsˈəʊn $ -ˈoʊn/ BrE AmE verb [transitive not in progressive]
[ Word Family: verb : ↑ own , ↑ disown ; noun : ↑ owner , ↑ ownership ]
to say that you no longer want to be connected with someone or something, especially a member of your family or something that you are responsible for:
Frankly, I’m not surprised her family disowned her.
Since 1960, Kubrick has virtually disowned the film.