- a person appointed by a national government to conduct official negotiations and maintain political, economic, and social relations with another country or countries.
- a person who is tactful and skillful in managing delicate situations, handling people, etc.
- an official, such as an ambassador or first secretary, engaged in diplomacy
- a person who deals with people tactfully or skilfully
1813, from French diplomate, a back-formation from diplomatique (see diplomatic) on model of aristocrate from aristocratique.