IPA: /dɪsˈoʊn/
KK: /dɪsˈoʊn/
To refuse to accept or recognize someone as part of your family or group.
After the argument, he decided to disown his son.
Past: disowned
Past Participle: disowned
Disown → It is formed from "dis-" (meaning apart or away) and "own" (from Old English "agan", meaning to possess). The word "disown" means to take away one's ownership or to deny a relationship or connection.
Think of 'taking away' ('dis-') your 'ownership' ('own') — that's why disown means to deny possession or connection.