hades; realm of the dead; the netherworld
Literary or religious term for the world of the dead, often used in mythological or spiritual contexts. Not an everyday word.
古代ギリシャ人は幽界を冥府と呼んだ。
The ancient Greeks called the realm of the dead Hades.
He claimed to be a messenger from the netherworld.
Sino-Japanese compound of 幽 (yū, 'dim, secluded, nether') and 界 (kai, 'world, realm'). The exact historical derivation is uncertain, but the spelling is conventionally associated with the concept of a hidden spirit world.