Diplomatic
DIPLOMATIC, adjective
1. Pertaining to diplomas; privileged.
2. Furnished with a diploma; authorized by letters or credentials to transact business for a sovereign at a foreign court. Ministers at a court are denominated a diplomatic body.
3. Pertaining to ministers at a foreign court, or to men authorized by diploma; as a diplomatic character; diplomatic management.
DIPLOMATIC, noun A minister, official agent or envoy to a foreign court.