invalidation

abrogate, annul, cancel; destroy; abolish; revoke, repeal, rescind, reverse, retract, recall; abolitionize; overrule, override; set aside; disannul, dissolve, quash, nullify, declare null and void; disestablish, disendow; deconsecrate., disclaim (deny); ignore, repudiate; recant; divest oneself, break off., countermand, counter order; do away with; sweep away, brush away; throw overboard, throw to the dogs; scatter to the winds, cast behind., dismiss, discard; cast off, turn off, cast out, cast adrift, cast out of doors, cast aside, cast away; send off, send away, send about one's business; discharge, get rid of (eject) [more]; bounce [U.S.]; fire, fire out; sack., cashier; break; oust; unseat, unsaddle; unthrone, dethrone, disenthrone; depose, uncrown; unfrock, strike off the roll; disbar, disbench., be abrogated; receive its quietus.