renounce

To give up (a title or possession, for example), especially by formal announcement.

To decide or declare that one will no longer adhere to (a belief or position); reject.

To decide or declare that one will no longer engage in (a practice) or use (something): synonym: relinquish.

To disclaim one's association with (a person or country, for example).

To give up, relinquish, or reject something.