override, overrule, overturn, vetoabate, abolish, abrogate, annul, avoid, cancel, disannul, dissolve, invalidate, negate, null, nullify, quash, repeal, rescind, roll back, strike down, vacate, voidabort, call, call off, drop, recall, retract, reverse, revoke, suspend, withdrawban, enjoin, forbid, outlaw, prohibitdisallow, dismiss, rejectannihilate, break down, eliminate, eradicate, erase, liquidate, remove, throw out, write off

enact, lay down, legislateestablish, found, instituteformalize, legalize, legitimate, legitimize, validatepass, ratifyallow, approve, authorize, clear, endorse(also indorse), permit, sanction, warrantcommand, decree, mandate, order, prescribe