retired emperor; emperor emeritus
Honorific title used for a former emperor, especially after abdication. Equivalent to 'His Majesty the Emperor Emeritus'.
See also: 上皇
His Majesty the Emperor Emeritus abdicated in 2019.
There are voices expressing concern about the health of the Emperor Emeritus.
上皇 is a more general term for a retired emperor, while 上皇陛下 is the honorific title used when addressing or referring to him respectfully.
天皇陛下 refers to the reigning emperor, whereas 上皇陛下 refers to the retired emperor.
Compound of 上皇 (retired emperor) and 陛下 (Your/His Majesty).