夢む魔ま

noun

nightmare

Refers to a frightening dream, often with a supernatural or oppressive feeling. More literary than 悪夢.

• 彼かれは夢む魔まにうなされて飛とび起おきた。

  He woke up with a start, tormented by a nightmare.

noun

incubus; succubus; dream demon

A demon or spirit that appears in dreams, often with sexual connotations. Used in folklore, fantasy, and occult contexts.

• その物もの語がたりでは、夢む魔まが眠ねむっている人ひとのもとに現あらわれる。

  In that story, a dream demon appears to a sleeping person.