noun
His Majesty the Emperor; the Emperor
Respectful title used when referring to the Emperor, especially the Emperor of Japan. The 陛下 part marks the reference as honorific.
天皇陛下は式典でお言葉を述べられた。
His Majesty the Emperor gave an address at the ceremony.
天皇陛下が被災地を訪問された。
His Majesty the Emperor visited the disaster-stricken area.