Fully acceptable or welcome, especially to a foreign government: The diplomat was persona grata. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "persona grata" in a sentence
"Distrusting his own powers of persuasion, he enlisted the good offices of Barbier, the late partner of the Rue des Marais printing-house, who was a persona grata with the novelist."
"At Nunappleton House Oliver was not a persona grata in 1650, for he had no sooner come back from Ireland than he had stepped into the shoes of the Lord-General Fairfax; and there were those, Lady Fairfax, I doubt not, among the number, who believed that the new Lord-General thought it was high time he should be where Fairfax's “scruple” at last put him."
"This lady was a much poorer actress, but was a persona grata with Monsieur Hostein."