Persona Non Grata Definition

nŏn grätə, grătə

personae-non-gratae

adjective

Fully unacceptable or unwelcome, especially to a foreign government.

The diplomat was persona non grata.

American Heritage

noun

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

Webster's New World

Synonyms:

Other Word Forms of Persona Non Grata

Singular:

persona non grata

Plural:

personae-non-gratae, personas-non-grata

Late Latin persōna nōn grāta Latin persōna person Latin nōn not Latin grāta feminine of grātus acceptable

From American Heritage Dictionary of the English Language, 5th Edition
Latin persona (“person") + non (“not") + grata (from gratus (“acceptable")).

From Wiktionary