plenipotentiary
noun
[ ˌplɛnɪpəˈtɛnʃ(ə)ri ]
• a person, especially a diplomat, invested with the full power of independent action on behalf of their government, typically in a foreign country.
Similar:
diplomat,
representative,
ambassador,
minister,
emissary,
chargé d'affaires,
chargé,
envoy,
legation,
legate,
plenipotentiary
adjective
• having full power to take independent action.
• "a minister plenipotentiary"
Origin:
mid 17th century: from medieval Latin plenipotentiarius, from plenus ‘full’ + potentia ‘power’.
