renounce
Definitions
To formally declare one's abandonment of a right, title, or possession.
To refuse to recognize or abide by any longer; to reject or disown.
Examples
The prince decided to renounce his claim to the throne to live a quiet life.
She had to renounce her citizenship in order to accept the position in the foreign government.
The organization was forced to renounce its violent tactics after public outcry.