A devil, demon, or fiend — an evil spirit or monstrous being as commonly depicted in stories and folklore.
昔話には悪魔が人間をだます話が多い。
Many old tales feature demons deceiving humans.
彼の行いはまるで悪魔のようだと言われた。
People said his deeds were like those of a devil.
子どもは夜に悪魔を怖がって泣いた。
The child cried at night, afraid of demons.
In Christian contexts, refers specifically to Satan — the Devil in theological terms.
聖書では悪魔（サタン）が誘惑者として描かれている。
In the Bible, the devil (Satan) is depicted as the tempter.
In Buddhism, can refer to Māra or evil forces/spirits that obstruct one's path to enlightenment.
仏典では悪魔（魔）が修行を妨げる存在として語られることがある。
Scriptures sometimes describe demons as entities that hinder spiritual practice.