term:

Renounce

renounce vb

re·nounced
re·nounc·ing
vt
1 : to announce one's abandonment or giving up of a right to or interest in
: disclaim [ an inheritance]
2 : to refuse to follow, obey, or recognize any further [ allegiance to one's country]
vi
: to make a renunciation

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.