noun
Hades; the hereafter; the underworld
Classical literary term for the realm of the dead, equivalent to the Greek Hades or the afterlife. Used in poetic or formal contexts; not a common modern word.
彼は泉下の人となった。
He has passed away (lit. become a person of the underworld).
泉下の客となる。
To die (lit. become a guest of the underworld).
From Chinese 泉下 (quánxià), literally 'under the springs', a euphemism for the underworld or afterlife. The exact historical derivation is uncertain, but the term is used in classical Chinese and Japanese literature.