disown

UK: /dɪsˈəʊn/ US: /dɪsˈoʊn/ ,(dis ōn′)

WordReference Random House Learner's Dictionary of American English © 2025

dis•own /dɪsˈoʊn/   v. [~ + object]

1. to refuse to acknowledge responsibility for:
   disowned their daughter after she eloped.

WordReference Random House Unabridged Dictionary of American English © 2025

dis•own  (dis ōn′), v.t. 

1. to refuse to acknowledge as belonging or pertaining to oneself;
   deny the ownership of or responsibility for;
   repudiate;
   renounce:
   to disown one's heirs; to disown a published statement.

• dis-¹ + own 1610–20

dis•own′ment, n. 
Synonyms

disclaim, disavow, reject, abjure.

Collins Concise English Dictionary © HarperCollins Publishers::

disown / dɪsˈəʊn/ verb

1. (transitive) to deny any connection with; refuse to acknowledge

disˈowner noun