noun
A generic term for a malevolent supernatural being, often used in folklore, fantasy, or religious contexts.
その寺には邪鬼を封じたという伝説が残っている。
There is a legend that an evil spirit was sealed at that temple.
ゲームの中で邪鬼を倒すクエストを受けた。
I took a quest to defeat an imp in the game.
Composed of 邪 (ja, 'wicked') and 鬼 (ki, 'demon' or 'spirit'). The exact historical derivation is uncertain, but the combination straightforwardly conveys the meaning of an evil supernatural being.