abjuration

n. [ L. abjuratio: cf. F. abjuration. ] 1. The act of abjuring or forswearing; a renunciation upon oath; as, abjuration of the realm, a sworn banishment, an oath taken to leave the country and never to return. [ 1913 Webster ]

2. A solemn recantation or renunciation; as, an abjuration of heresy. [ 1913 Webster ]

Oath of abjuration, an oath asserting the right of the present royal family to the crown of England, and expressly abjuring allegiance to the descendants of the Pretender. Brande & C. [ 1913 Webster ]