Definition
In international law, a diplomatic representative who is personally acceptable to the receiving state — that is, to the sovereign or government to which the representative is accredited. A head of mission or other diplomatic agent acquires persona grata status when the receiving state has signaled, expressly or by conduct, that it finds the individual acceptable to serve in that capacity. The term is most commonly encountered in contrast to its opposite, PERSONA NON GRATA, and rarely appears in formal instruments except by implication: the mechanics of agrément and accreditation presuppose that an accepted envoy is persona grata.
The concept belongs to the framework of diplomatic law and reflects the sovereign prerogative of every state to determine who may represent a foreign government on its territory. Acceptability is a political judgment; the receiving state is not required to explain or justify its position.
Common Language
Modern common usage (Wiktionary): A person who is welcome or acceptable.
Historical common usage: The term does not appear as a standalone entry in Webster's 1913; it circulated primarily as diplomatic and legal terminology during that period rather than as ordinary English vocabulary.
Editorial note: The common English usage has drifted toward casual social acceptability — someone who is liked or welcome in a group or situation. The legal meaning is narrower and more formal: it describes a specific diplomatic status within the law of nations, carrying procedural consequences (agrément, credentialing, and the possibility of revocation) that the everyday sense entirely omits.
Common Confusion
Persona grata and persona non grata are understood as simple opposites, but researchers should note that persona grata is the unmarked, default condition — it does not require a formal declaration. Persona non grata, by contrast, is a formal legal act under international law with defined consequences under the Vienna Convention on Diplomatic Relations (1961). The asymmetry matters: a state declares persona non grata; it does not typically declare persona grata. The absence of a rejection is the operative signal of acceptability.
Why It Matters in Research
Researchers working in pre-twentieth-century diplomatic materials will find persona grata used loosely, sometimes interchangeably with the idea of a properly credentialed envoy, without the sharp procedural definition that later codification imposed. Bouvier draws the distinction from persona non grata but offers no independent operational content for persona grata itself — which is accurate, because the term's legal weight derives almost entirely from the contrast.
The Vienna Convention on Diplomatic Relations (1961) codified the persona non grata mechanism explicitly but left persona grata as the implicit baseline. Corpus researchers should therefore search both terms together when tracing a diplomatic episode: the declaration of persona non grata is the documented event; persona grata status is inferred from the surrounding record.
In nineteenth- and early twentieth-century American and European diplomatic correspondence, persona grata appears frequently in the context of agrément — the informal advance consent a sending state seeks before formally nominating a head of mission. Failure to obtain agrément, or its silent withdrawal, is the practical precursor to a persona non grata declaration. These concepts are functionally linked but textually distinct in historical sources.
Jurisdictional variation is largely irrelevant here: this is a term of public international law, not domestic law, and its content is governed by treaty and customary international law rather than by national legal systems. Domestic courts rarely interpret it.
Historical Dictionary Support
Bouvier's entry is brief but accurate for its era. It correctly identifies the international law context, the diplomatic representative as the subject, and the contrast with persona non grata, citing the Standard Dictionary as authority. What Bouvier does not address — and could not, writing before the Vienna Convention — is the procedural architecture that would later give the term its formal legal home. Nineteenth-century usage was grounded in custom and comity rather than codified treaty obligation.
The entry's reliance on contrast with persona non grata reflects the term's natural legal gravity: persona grata is definitionally inert without its opposite. Researchers should treat Bouvier's entry as a starting point for historical usage but consult the Vienna Convention and its travaux préparatoires for modern operational meaning.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia — Diplomatic Relations; Ambassadors and Foreign Ministers; Vienna Convention on Diplomatic Relations