envoy

1 a person sent on a mission to represent another the president sent the secretary of state as his personal envoy to gain the support of the country's allies Synonyms agent, delegate, emissary, ambassador, legate, minister, representativeRelated Words ambassadress; attaché, chargé d'affaires, consul, deputy, diplomat, foreign minister, nuncio, procurator, proxy; apostle, evangelist, missionary; deputation, detachment, legation; courier, messenger; mouthpiece, spokesperson

2 a person who acts or does business for another one of the hostage takers was chosen as the group's envoy for all dealings with the authorities Synonyms assignee, attorney, commissary, delegate, deputy, agent, factor, minister, procurator, proxy, rep, representativeRelated Words ambassador, diplomat, diplomatist, emissary, foreign minister, legate, plenipotentiary; alternate, backup, pinch hitter, relief, replacement, stand-in, sub, substitute, surrogate, understudy; informer, operative, spy; broker, distributor, manager; arbiter, arbitrator, comprador (or compradore), conciliator, go-between, intercessor, intermediary, interposer, liaison, mediator, middleman, peacemaker; mouthpiece, point man, point person, prophet, speaker, spokesman, spokesperson