Persona non grata is a person that is in disfavor, who isn't welcomed or whose presence is not desired.
(noun)See persona non grata in Webster's New World College Dictionary
Origin: L
See persona non grata in American Heritage Dictionary 4
adjective
Origin:
Origin: Late Latin persōna nōn grāta
Origin: : Latin persōna, person
Origin: + Latin nōn, not
Origin: + Latin grāta
Origin: , feminine of grātus, acceptable
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