invalidation

n

1. refutation, disproving, disproof, confutation, rebuttal; disputation, denial, opposition; contradiction, negation; overturn, overthrow, subversion; expose, Latin, reductio ad absurdum. unmasking; discredit, disparagement, debasement; marring, spoiling, ruin, wrecking, destruction, destroying.

2. weakening, undermining, enfeeblement, debilitation; enervation, exhaustion, sapping, devitalization, disablement, crippling, paralysis.

3. voidance,' avoidance, disannulment, annulment, nullification, Law. defeasance, quashing, vitiation, Obs. vacatur, disestablishment, setting aside; cessation, Law. nolle prosequi, discontinuance, suspension; countermand, counterorder, overriding, overruling; veto, negation.

4. revocation, rescinding, rescindment, rescission, abrogation, reversal, repeal, abolishment, abolition; recantation, retraction, retractation, withdrawal, taking back, undoing, recall; renouncement, renunciation, relinquishment, repudiation, abjuration, abnegation; disavowal, disclaimer, disclamation, denial.

5. termination, dissolution, putting an end to, bring- ing to an end, doing away with; discarding, dismissal, getting rid of, casting aside, throwing out.