Synonyms and related words :
abate, abolish, annihilate, annul, blot out, bring to naught, cancel, countermand, counterorder, disannul, discharge, dissolve, do away with, extinguish, invalidate, make void, negate, negative, nullify, obliterate, override, overrule, quash, recall, recant, renege, repeal, rescind, retract, reverse, revoke, ruin, set aside, suspend, undo, vacate, vitiate, void, waive, withdraw, wreck, write off,