幽ゆう界かいゆうかいFreq.FrequencyTop 100,000じ字FuriganaMeanings1nounhades; realm of the dead; the netherworldLiterary or religious term for the world of the dead, often used in mythological or spiritual contexts. Not an everyday word.古こ代だいギリシャ人じんは幽ゆう界かいを冥めい府ふと呼よんだ。