abrenunciation
n.n. the act of officially giving up a right, a title, or a promise. It is an old-fashioned word that you might see in history books or legal documents.
n. the formal act of renouncing a right, title, or legal obligation. Archaic in modern usage; primarily found in historical legal contexts or literary works.
The king's abrenunciation of the throne surprised everyone.
The treaty required a formal abrenunciation of all previous claims to the disputed territory.
The abrenunciation of the title was not merely a legal formality but a symbolic gesture intended to signal a permanent break from the old regime's influence.
From either Old French abrenonciation or from Late Latin abrenuntiatio, from Late Latin abrenuntiatiō, from ab + renuntiatiō (“to renounce”). * See abrenounce.