noun
persona non grata
A diplomatic term for a person who is unacceptable or unwelcome, especially in a foreign country. Used in formal or political contexts.
from Latin
その外交官はペルソナ・ノン・グラータと宣言された。
The diplomat was declared persona non grata.
彼はスパイ行為の疑いで
He became persona non grata on suspicion of espionage.