Same word as quitclaim:

abandonment, abjuration, abnegation, abstention, cancellation, demission, denial, disavowal, disclaimer, eschewal, eschewing, forbearing, forswearing, giving up, rebuff, refusal, relinquishment, remission, renouncement, renunciation, repeal, repudiation, resignation, sacrifice, self-abnegation, self-denial, self-sacrifice, spurning, surrender, veto, waiver, yielding