AskDefine | Define sororicide

User Contributed Dictionary



  1. the killing of one's sister
  2. a person who kills his/her sister


Extensive Definition

This article is about a kind of homicide. For the Icelandic band with the same name see Sororicide (band).
Sororicide is the act of killing one's own sister. It derives from the Latin soror for sister and -cide, derived from caedere, to cut or kill.
There are a number of examples of sororicide and fratricide (the killing of one's brother) in adolescents, even pre-adolescents, where sibling rivalry and resulting physical aggression can get out of hand and lead to the death of one of them, particularly if a firearm is available or if one is significantly older than the other and misjudges his/her own strength.
Compare with child murder (the killing of an unrelated child), infanticide (killing of an infant under the age of one year), filicide (the killing of a child by his or her parent), and patricide and matricide (the killing of a father or mother respectively by his or her child).

Known or suspected sororicides

Sororicides in fiction

  • In William Shakespeare's King Lear, Goneril poisons her sister Regan in their struggle for power.
  • In the Halloween film series, serial killer Michael Myers relentlessly pursues and slays both his older sister, Judith, and his younger sister, Laurie.
  • In the God of War (video game) series, Kratos accidentally murders Athena, where he learns she's Kratos's half-sister because it was revealed that Zeus is his birth father.
  • In the 1962 movie What Ever Happened to Baby Jane? (as well as the 1991 TV movie What Ever Happened to Baby Jane?), sisters Blanche and Jane mistreat and attempt to kill each other out of jealousy and hatred.
  • According to Roman mythology, one of the Horatii killed his sister after she mourned an enemy he had slain, who had happened to be her fiancé.
  • In the anime Blood+, Chiropterans have a biological hive system. Two twin Queens are always born from cocoons in one of the preceding Queen's womb. When the blood of one Queen mixes with her sister's, it violently crystallizes. In Blood+, Saya kills her twin sister Diva in a 123 year-old war between them.
  • In Fatal Frame II: Crimson Butterfly, the village forces twin sisters to partake in a ritual in which one sister strangles the other. In the canonical 'bad ending', Mio Amakura does indeed strangle her twin sister Mayu to death. (The other documented instance of sororicide is when Azami Kiryu kills her sister Akane.)
  • In Child Ballad #10, "The Twa Sisters", or "The Dreadful Wind and Rain" the older sister murders the younger sister over the love of a man, and the younger sister's bones are found by a wandering musician who makes an instrument (either a harp or a fiddle, depending on the version) out of them and strings it with her hair. The instrument then tells the story of how she died, usually resulting in a gruesome death for the older sister.
  • In Phoenix Wright: Ace Attorney - Trials and Tribulations, Dahlia Hawthorne kills her step-sister Valerie Hawthorne in the fourth case of the game when Valerie threatened to expose the truth behind a fake kidnapping that Dahlia and her boyfriend plotted five years ago in order to steal a rare diamond.
  • In one of the endings of the video game, Trapt (video game), Allura kills her half-sister, Rachel, for the final sacrifice to revive Malphas. Also, Finnegan kills his older sister Ada in an act of betrayal after being corrupted by the desire to obtain Allura's power for himself.
  • In the anime Death Note, Light Yagami considers killing his sister, Sayu when she ends up being captured by Mello (Death Note) and his gang in an attempt to retrieve the titular Death Note, but Light doesn't kill her simply because he could not blame her death on Kira.
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