abate, abrogate, annihilate, annul, blot out, bring to naught, cancel, countermand, counterorder, delete, demolish, deracinate, destroy, disallow, disannul, do away with, eliminate, end, eradicate, erase, expunge, exterminate, extinguish, extirpate, invalidate, liquidate, make void, negate, negative, nullify, obliterate, override, overrule, quash, recall, recant, renege, repeal, rescind, retract, reverse, revoke, root out, set aside, stamp out, suspend, terminate, undo, uproot, vacate, vitiate, void, waive, wipe out, withdraw, write off