persona non grata Hear it!

persona non grata Definition

per·sona non grata (pər sō′nə nōn grät′ə)

noun pl. per·so′·nae non gra′·taepər sō′nē nōn grä′tē

a person who is not acceptable or welcome; esp., a foreign diplomat unacceptable to the government to which he or she is assigned

Etymology: L