noun
Archaic honorific term for the emperor, used in historical or literary contexts. Not used in modern standard Japanese.
古文書には「上御一人」と記され、帝を指す尊称として用いられた。
In old documents, '上御一人' was written as an honorific term referring to the emperor.
The exact derivation is uncertain; the spelling combines 上 (above, superior), 御 (honorific prefix), and 一人 (one person), suggesting a unique, supreme individual.