1.
demon; evil spirit; devil
A supernatural evil being or malevolent force. Common in religious, mythological, and fantasy contexts.
魔が差した。
I was seized by a moment of madness.
勇者が魔王を倒す物語。
A story of a hero defeating the demon king.
彼は普段は真面目だが、魔が差して嘘をついてしまった。
He's normally honest, but a moment of weakness made him tell a lie.
2.
magic; sorcery; temptation
Supernatural or dark power, or the temptation to do something harmful. Used in compounds related to magic, witchcraft, and irresistible urges.
魔法が使えたらいいのに。
I wish I could use magic.
この場所には魔の力が宿っている。
A dark power dwells in this place.
睡魔に襲われて、会議中なのに目が閉じそうになった。
Drowsiness overcame me, and I nearly closed my eyes even though I was in a meeting.
Refers to demons, evil forces, and dark magic. Extremely productive in compounds. The expression 魔が差す (literally 'the devil slipped in') is one of the most common everyday uses.
KEY EXPRESSION:
魔が差す — to be momentarily tempted; to act on a sudden impulse (usually to do something wrong). Used to explain uncharacteristic bad behavior.
COMMON COMPOUNDS:
- 魔王 — demon king
- 魔法 — magic, sorcery
- 魔女 — witch
- 魔物 — demon, monster
- 魔力 — magical power
- 悪魔 — devil, demon
- 睡魔 — drowsiness (literally 'sleep demon')
- 魔除け — charm against evil, talisman
COMMON COLLOCATIONS:
- 魔が差す — to have a moment of weakness
- 魔の手 — the clutches of evil
- 魔の力 — demonic/dark power
- 魔の時間帯 — the 'witching hour' (dangerous period)
SIMILAR WORDS:
- 鬼 — ogre, demon (more Japanese folklore, less supernatural evil)
- 悪魔 — devil (specifically the Devil or a demon in the Christian sense)