Mora

The word survives in English. Nightmare descends from the Old English niht-mære, where mære is the same creature as the Slavic mora, the Germanic Mahr, and the Scandinavian mara. The root may be Proto-Indo-European, connected to mer- (to crush, to press), an exact description of what the creature does. Vuk Karadžić recorded the Serbian form mora in his dictionary without elaboration. He did not need to. Everyone knew what it was.

Appearance

The Mora has no fixed supernatural form because she is not, strictly speaking, a supernatural creature. She is a living woman. By day she looks like anyone else in the village. At night, her spirit separates from her sleeping body and travels to her victims.

When she attacks, she can take many shapes. A horse, a dog, a hen, a snake, a thread thin enough to pass through a keyhole. The shapeshifting is functional: it lets her enter sealed houses. Once inside, she resumes something closer to human form, though what victims see during the attack is debatable. Most feel her rather than see her: a weight on the chest, a pressure that pins them in place, a sensation of being slowly crushed.

Two animal forms are forbidden to her across all regional traditions. She cannot become a sheep, and she cannot become a bee. No source explains why. The prohibition is simply recorded and repeated.

One folk narrative preserved a stranger form than any animal. A man tormented nightly by a Mora traveled with his white horse from inn to inn, but she followed everywhere. One night a tailor saw a single white hair moving with snake-like speed across the wool coat covering the sleeper. The tailor cut the hair in two with his heavy cloth shears. The sleeper calmed. In the morning, the white horse lay dead in the stable. The Mora had been the horse all along.

Origins

A woman becomes a Mora through circumstances of birth, not through choice or sin. This is the most distinctive feature of the belief. The Mora is not a witch who chose dark powers. She is a woman cursed before she could speak.

The most common origin: a girl born with a caul, the thin membrane of the amniotic sac covering her face at birth. In Serbian folk belief, this “lucky hood” marked her as a future Mora. A girl born still enclosed in the full amniotic sac, the “blue shirt,” carried the same mark. If the sac was bloody, a “red shirt,” the midwife or father had to shout a specific announcement from the rooftop immediately after birth to prevent the transformation. The details of the shout varied by region. The urgency did not.

Some traditions in Bosnia and Slavonia held that certain women became Moras temporarily during illness or emotional distress. The spirit-wandering happened involuntarily, and the Mora herself might not know what she had done. She would wake exhausted and confused, having spent the night on someone else’s chest.

The boundary between Mora and witch varied by region. In Herzegovina, Moras were girls born to witches who learned all witchcraft but could not practice it during maidenhood. The moment the bridal wreath was placed on her head at the wedding, the Mora became a full witch. On the islands of Korčula and Brač, the opposite held: a Mora could never become a witch, married or not. On Brač, the two were distinguished by their faces: Moras had scratched skin, while witches had heat blisters and pimples.

Behavior

The Mora attacks at night, always while the victim sleeps. She enters the house through any opening: a keyhole, a crack in the window frame, the gap under a door. She sits on the sleeper’s chest and presses down. The victim wakes into a state between sleep and consciousness: unable to move, unable to call out, heart pounding, lungs compressed.

In Serbian and Montenegrin traditions, she drinks blood. This separates the South Slavic Mora from her Germanic counterpart, the Mahr, who was said to drink milk or simply crush. The blood-drinking places the Mora in the same category as the vampire: a nocturnal predator that feeds on the living. If she discovered a victim with sweet blood, she fell in love and would not leave. Krauss recorded the belief plainly: “Once a Mora has discovered sweet blood in a person, she falls in love with him and will not leave him.” Victims of repeated visits grew pale and weak, and the community recognized the pattern.

Children were considered especially vulnerable. Swollen glands in infants, unexplained moisture around the mouth, restless sleep with visible distress: all could be read as signs of a Mora’s visit. Scissors placed under a child’s pillow became standard practice across western Serbia and Dalmatia.

The Mora was also known to ride horses at night. Farmers who found their horses sweating in the stable at dawn, manes tangled into knots, attributed it to a Mora who had ridden the animal all night. The tangled mane was called a “mora’s braid” and was not to be combed out, since doing so would anger her and bring worse visits.

Regional Names

The belief is consistent across South Slavic territory, with local naming variations. In Serbia, Montenegro, and Dalmatia: mora. Among Croats: mura. In Slavonia and Bosnia: tmora, possibly from tma (darkness). In southern Bulgaria, the same function was filled by the lamia, a name borrowed from Greek mythology but applied to a creature with identical behavior. In parts of Montenegro, the Mora was called vještica (witch), blurring the boundary between the night demon and the human practitioner of magic.

Rural people often avoided saying the name directly. The most common euphemism was noćnica, the night woman. Using the real name might attract her attention.

Protection

The most widespread defense was a blade under the pillow. Scissors for children, a knife for adults. The metal was thought to repel or injure her spirit-form. Crossed scissors were more effective than open ones.

Garlic appeared in the protective repertoire, as it did for vampires. Burning old leather, particularly shoe leather, created a smoke that the Mora supposedly could not tolerate. A woven belt laid lengthwise across the bed prevented her from settling on the chest. Prayers and incantations recited before sleep offered spiritual protection.

The most dramatic countermeasure involved catching the Mora. If a person, while being attacked, managed to grab an item of the Mora’s clothing or her hair, she would be forced to appear in her human form the next morning to reclaim it. Once identified, social pressure, threats of beating, or actual violence could follow. Documented cases from rural communities show that suspected Moras were sometimes beaten or ostracized. The accusation, like the accusation of witchcraft everywhere in Europe, fell disproportionately on women who lived outside social norms: unmarried women, widows, women who kept to themselves.

Cross-Cultural Connections

The Mora belongs to a vast family of nocturnal chest-pressers documented across Europe and beyond. The Germanic Mahr or Alp produced the German word Albtraum (nightmare). The Scandinavian mara entered Norse mythology and survived into modern Swedish and Norwegian. The Newfoundland “Old Hag” tradition describes the same experience with the same physicality. The Japanese kanashibari and the Turkish karabasan match the symptom profile precisely.

Medical science identifies the underlying experience as sleep paralysis: a state in which the sleeper wakes while the body remains in REM atonia, producing immobility, chest pressure, and often vivid hallucinations of a presence in the room. The paralysis typically lasts seconds to minutes. The terror lasts longer.

What is notable about the South Slavic Mora is how concretely she is embedded in the social fabric. She is not a nameless demon or abstract force. She is your neighbor’s daughter, born with a caul. She may not know what she does. She can be caught, confronted, and identified. The belief system locates the supernatural threat inside the community, gives it a human face, and provides methods for dealing with it that range from scissors under a pillow to public exposure. It is folklore operating as a complete explanatory framework for a real physiological event that no one, until the twentieth century, had any other way to explain.