Meaning of “diplomatic” - Learner’s Dictionary

diplomatic

adjective uk us /ˌdɪpləˈmætɪk/
GOVERNMENTS [ always before noun ]

relating to diplomacy or diplomats:

diplomatic relations
PEOPLE

good at dealing with people without upsetting them:

That's a very diplomatic answer.
diplomatically adverb

(Definition of “diplomatic” from the Cambridge Learner’s Dictionary © Cambridge University Press)