Mononoke
Spirits in Japanese lore causing possession, disease, or death.
Mononoke (物の怪) is a term from Japanese classical literature and folk religion for various kinds of spirits—vengeful spirits (onryō), the dead (shiryō), or the living (ikiryō)—believed to cause suffering, disease, or death through possession. The word can also refer to yōkai or henge ("changed beings").
These spirits appear often in Heian-period writings. A famous example is in the ninth volume of *The Tale of Genji*, where Lady Rokujo's ikiryō possesses Aoi no Ue. Other texts, like *Ōkagami* and *Masukagami*, also mention mononoke. At a time when medical knowledge was limited, monks and shugensha would perform incantations and prayers against illnesses blamed on mononoke. They would temporarily transfer the spirit into a person called a yorimashi—often a servant or apprentice—and then exorcise it to cure the patient. Detailed accounts of this practice appear in *The Pillow Book* and *The Diary of Lady Murasaki*.
The earliest known use of the term in Japanese literature is in the *Nihon Kōki*. A quotation from the *Nihon Kiryaku* notes an entry from the 12th month of Tenchō 7 (830): "Five monks were invited to recite the Diamond Sutra. With some difficulty, the Jingi-kan relieved it. It was the work of a 物恠." Other entries from the 8th month of the same year and the 5th month of year 10 also mention mononoke. In older language, "mono" referred to oni, spirits, or ara-mitama—things not felt to be clearly real. The Taihō Code used "toki no ke" (時気) for epidemic diseases, with "ke" meaning "disease." Thus, "mono no ke" meant a disease caused by these "mono." *The Pillow Book* lists disease names like "mune no ke" (chest ailment) and "ashi no ke" (foot ailment), alongside "mono no ke."
During the early Heian period, societal troubles and illnesses were often blamed on curses (tatari) from vengeful spirits. The successive deaths of emperors and epidemics in the Enryaku years were attributed to the curse of Prince Sawara. The *Nihonkoku Genpō Zen'aku Ryōiki* tells how Prince Nagaya's grudge killed many. The *Shoku Nihongi* mentions Fujiwara no Hirotsugu's vengeful spirit. However, this view was not yet dominant. Emperor Saga warned against attributing all mononoke to spirit curses, calling such claims baseless.
- field
- Japanese classical literature and folk religion
- nationality
- Japanese
- known_for
- Spirits believed to cause possession, disease, and death; prominent in Heian period texts
Lore & Background
The first appearance of the term in Japanese literature is in the Nihon Kōki, with a quotation from the Nihon Kiryaku recording an event in the year Tenchō 7 (830) where five monks recited the Diamond Sutra to relieve a possession attributed to a 物恠 (mononoke). In the old language, 'mono' referred to oni, spirits, or Ara-mitama, while 'ke' meant disease, so 'mono no ke' denoted diseases caused by these entities. The Pillow Book lists diseases such as 'mune no ke' (chest ailment) and 'ashi no ke' (foot ailment) alongside 'mono no ke'.
Reader's Guide
Mononoke were central to Heian period beliefs about illness and misfortune. When medical knowledge was limited, monks and shugensha performed incantations and prayers against diseases attributed to mononoke, often using a yorimashi (a servant or apprentice) as a temporary vessel for exorcism. This practice is detailed in works like The Pillow Book and The Diary of Lady Murasaki. Over time, the concept evolved: initially, Emperor Saga cautioned against attributing all mononoke to vengeful spirits, but later, under the influence of onmyōdō and events like the deaths following Sugawara no Michizane's demise, the belief that mononoke were caused by vengeful spirits' curses grew stronger. Eventually, individual deaths, illnesses, and pain were all seen as due to mononoke, and the illnesses themselves became called mononoke.
Did You Know?
- The term mononoke first appears in Japanese literature in the Nihon Kōki, quoted in the Nihon Kiryaku for the year Tenchō 7 (830).
- In the Heian period, monks would temporarily transfer a mononoke into a yorimashi (often a servant) to perform exorcisms.
- Emperor Saga cautioned against attributing all mononoke to vengeful spirits, calling such assertions 'very baseless'.
- The Pillow Book lists 'mune no ke' (chest ailment) and 'ashi no ke' (foot ailment) alongside 'mono no ke'.
Frequently Asked Questions
What is Mononoke?
Mononoke (物の怪) is a broad Japanese term for malevolent spirits that afflict people through possession, unexplained illness, or death. Rather than describing a single ghost, it functions as an umbrella category for several types of harmful spirits in Japanese folk belief.
What kinds of spirits fall under the term Mononoke?
The category includes onryō (vengeful spirits), shiryō (restless spirits of the dead), and ikiryō (spirits of people who are still alive). In some contexts the word also stretches to cover yōkai or henge, meaning 'changed beings.'
Where does Mononoke appear in Japanese literature?
The concept is especially prominent in Heian-period writings, with a well-known example in the ninth volume of The Tale of Genji, where Lady Rokujo's living spirit takes possession of Aoi no Ue. Other classical texts such as Ōkagami and Masukagami also reference these possessing spirits.
How did people in the Heian era deal with Mononoke?
Because medical knowledge was limited at the time, unexplained sickness or sudden death was commonly attributed to a spirit's possession. Monks and shugenja (mountain ascetics) were summoned to perform exorcism rituals intended to expel the offending spirit from the victim.
Is Mononoke the same thing as Yōkai?
Not quite—mononoke specifically denotes spirits that cause harm by possessing or afflicting a living person, whereas yōkai is a wider label for all manner of supernatural creatures. The two overlap in places, since mononoke can sometimes refer to henge ('changed beings'), which sits closer to the yōkai umbrella.
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