persona non grata is a noun meaning "a diplomat who is unacceptable to the government to which he is sent". It carries 2 recorded senses.
a diplomat who is unacceptable to the government to which he is sent
a person who for some reason is not wanted or welcome
Definitions, synonyms and semantic relations for persona non grata come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.