adj
Concerning the relationships between the governments of countries.
She spent thirty years working for Canada's diplomatic service.
Albania immediately severed diplomatic relations with Zimbabwe.
Exhibiting diplomacy; exercising tact or courtesy; using discussion to avoid hard feelings, fights or arguments.
Thoughtful corrections can be diplomatic as well as instructional.
Describing a publication of a text which follows a single basic manuscript, but with variants in other manuscripts noted in the critical apparatus.
Relating to diplomatics, or the study of old texts; paleographic.
noun
The science of diplomas, or the art of deciphering ancient writings and determining their age, authenticity, etc.; paleography.
In its broadest aspect, the subject-matter of diplomatic is the relation between documents and facts.