sole prerogative; exclusive prerogative
Refers to a matter or right that belongs exclusively to a particular person, group, or authority, often used in legal, political, or organizational contexts.
Foreign policy is considered the sole prerogative of the president.
Personnel authority is the exclusive prerogative of the company president.
特権 is a privilege or special right granted to someone, while 専権事項 emphasizes that the matter is exclusively under someone's authority.
権限 is a broader term for authority or power, whereas 専権事項 specifically denotes a matter over which one has sole authority.
Compound of 専権 (exclusive authority) and 事項 (matter, item). The exact historical derivation is uncertain, but the term is used in modern formal contexts.