countermand

ˌkaʊntəˈmɑːnd

verb

revoke or cancel (an order).

an order to arrest the strike leaders had been countermanded

revoke,rescind,reverse,undo,repeal,retract,withdraw,take back,abrogate,abolish,quash,scrap,override,overturn,overrule,do away with,set aside,cancel,annul,invalidate,nullify,negate,veto,declare null and void,back-pedal on,backtrack on,do a U-turn on,disaffirm,discharge,avoid,vacate,vitiate,axe,ditch,dump,knock on the head,recall,disannul

noun

an order revoking a previous one.

I forthwith mounted, and went off, lest I should receive a countermand