PGOsomeone who has full power to take action or make decisions, especially as a representative of their government in a foreign country 〔尤指在外国代表本国政府的〕全权大使,全权代表
—plenipotentiaryadjectiveadj
Examples from the Corpus
plenipotentiary• Are they delegates, representatives or plenipotentiaries, for instance?• At both guberniia and centrallevels the Soviet government established a liaison system between their own plenipotentiaries and all foreign relieforganizations.• And what have the Portland Place plenipotentiaries to say about it?• There were plenipotentiaries in courtuniforms so decked with gold that their coats seemed like sheets of light.
Originplenipotentiary
(1600-1700)Medieval Latinplenipotentiarius, from Latinplenus ( → PLENTY3) + potens“powerful”