• synonyms


[fra-tri-sahyd, frey-]
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  1. a person who kills his or her brother.
  2. the act of killing one's brother.
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Origin of fratricide

1490–1500; (def 1) < Middle French < frātricīda, equivalent to frātri- (combining form of frāter) brother + -cīda -cide; (def 2) < Middle French < Late Latin frātricīdium, equivalent to frātricīd(a) + -ium noun suffix
Related formsfrat·ri·cid·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for fratricidal

civil, domestic, internal, fratricidal

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Contemporary Examples of fratricidal

Historical Examples of fratricidal

British Dictionary definitions for fratricidal


  1. the act of killing one's brother
  2. a person who kills his brother
  3. military the destruction of or interference with a nuclear missile before it can strike its target caused by the earlier explosion of a warhead at a nearby target
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Derived Formsfratricidal, adjective

Word Origin for fratricide

C15: from Latin frātricīda; see frater 1, -cide
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

Word Origin and History for fratricidal


1804, from fratricide + -al (1).

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mid-15c., "person who kills a brother;" 1560s, "act of killing a brother," from Latin fratricida "brother-slayer," from frater "brother" (see brother) + cida "killer," or cidum "a killing," both from caedere "to kill, to cut down" (see -cide). Among several Old English words for this were broðorbana "one who kills a brother;" broðorcwealm "act of killing a brother."

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Online Etymology Dictionary, © 2010 Douglas Harper