envoy
Definitions
A messenger or representative, especially one on a diplomatic mission.
An accredited minister or official sent by one government to another.
Examples
The president sent a special envoy to negotiate the terms of the peace treaty.
As a diplomatic envoy, she traveled extensively to foster better relations between the two nations.
The king dispatched his most trusted envoy to deliver the urgent message to the neighboring kingdom.
Synonyms
ambassador delegate emissary messenger diplomat representative courier