emissary
/ɪˈmɪsɛri/ or /ɛˈmɪsɛri/Definitions
1. noun
a person sent to represent or negotiate for another, especially in a diplomatic capacity
“The emissary from the foreign country met with the government officials to discuss the terms of the treaty.”
2. noun
a person who spreads or advocates a particular cause, idea, or movement
“The charismatic emissary for the charity organization inspired many people to donate and participate in fundraising events.”
3. verb
to send or dispatch (a person) to a place or situation
“The company emissaried a team of employees to the conference to learn about the latest market trends.”