Englishabrogate
verb
the government has formally abrogated the 1977 treaty:
repudiate, revoke, repeal, rescind, overturn, overrule, override, do away with, annul, cancel, break off, invalidate, nullify, void, negate, dissolve, countermand, veto, declare null and void, discontinue;
renege on, go back on, backtrack on, reverse, retract, remove, withdraw, abolish, put an end to, get rid of, suspend, end, stop, quash, scrap;
Law disaffirm, avoid, vacate, vitiate;
informal axe, ditch, dump, chop, give something the chop, knock something on the head;
rare deracinate.
▷antonyms institute, introduce.