Invalidation

n.

1.

The act of inavlidating, or the state of being invalidated. So many invalidations of their right. - Burke.

Noun

1.

invalidation - (law) a formal termination (of a relationship or a judicial proceeding etc) Synonyms: annulment

abolishment, abolition, abrogation, annulment, cancel, canceling, cancellation, cassation, counterbalancing, countermand, counterorder, defeasance, disconfirmation, disproof, disproval, disproving, explosion, expose, exposure, frustration, negation, neutralization, nullification, offsetting, recall, recantation, redargution, reductio ad absurdum, renege, repeal, rescinding, rescindment, rescission, retraction, reversal, revocation, revoke, revokement, setting aside, suspension, thwarting, undoing, vacation, vacatur, vitiation, voidance, voiding, waiver, waiving, withdrawal, write-off