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homicide

American  
[hom-uh-sahyd, hoh-muh-] / ˈhɒm əˌsaɪd, ˈhoʊ mə- /

noun

  1. the killing of one human being by another.

  2. a person who kills another; murderer.


homicide British  
/ ˈhɒmɪˌsaɪd /

noun

  1. the killing of a human being by another person

  2. a person who kills another

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

homicide Cultural  
  1. The killing of one person by another, whether intended (murder) or not (manslaughter). Not all homicide is unlawful; killing in self-defense, for example, is not a crime.


Other Word Forms

  • self-homicide noun

Etymology

Origin of homicide

First recorded in 1325–75; Middle English, from Middle French, from Latin homicīdium “a killing,” homicīda “killer,” equivalent to homi- (combining form of homō “man”) + -cīdium, -cīda, noun suffix; -cide

Explanation

The noun homicide means a murder. If you kill another person, you are committing a homicide. The level of the homicide is legally defined as murder if the act was intentional and as manslaughter if it was unintentional. Remember the meaning of homicide by remembering that cide, from the Latin cida, refers to killing, while the Latin homo means "man.” So homicide means “killing a man.” You can see another example in this quote from Oliver Wendell Holmes: “Life and language are alike sacred. Homicide and verbicide — that is, violent treatment of a word with fatal results to its legitimate meaning, which is its life — are alike forbidden.”

Keep Reading on Vocabulary.com

Vocabulary lists containing homicide

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

These trends emerged despite the mayor's assertion that London's per capita homicide rate has fallen to its lowest level on record.

From BBC • Apr. 9, 2026

While he didn’t have any updates for her, the conversation with Jessica apparently struck a chord, and he asked a homicide detective named Anthony Stafford to review Cynthia’s case.

From Slate • Apr. 6, 2026

He later mislabeled the dashcam footage, which kept it out of the homicide file.

From The Wall Street Journal • Apr. 5, 2026

Extreme ideas are shaping a campaign which features a record 35 candidates, as Peru confronts soaring extortion and a homicide rate that has more than doubled since 2018.

From Barron's • Mar. 26, 2026

From 1991 to 2001, the homicide rate among young black men—who were disproportionately represented among crack dealers—fell 48 percent, compared to 30 percent for older black men and older white men.

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt