Plenipotentiary

plenipotentiary (from the Latin plenus “full” and potens “powerful”) is a diplomat who is fully authorized to represent a government as a prerogative (such as an ambassador or an envoy). When used as a noun more generally, the word plenipotentiary can also refer to any person who has “full powers”. When used an adjective, plenipotentiarydescribes something which confers “full powers”, such as an edict or an assignment.