Etymologically

fratricida

Etymology and origin of the Latin word fratricida

Confidence
Established
Formation
Compound
First attested
81–43 BC Cicero More words from the 1st century BC
Ultimate origin
Latin frāter,caedō
Etymology tree
inherited borrowed derived
Latin frāter
French frère
Latin frātricīda
English fratricide
Derivations
From the same root
Latin frātellus ← frāter
Latin frāternus ← frāter

Pronunciation

  • Classical: [fraː.trɪˈkiː.da][1]
  • Ecclesiastical: [fra.triˈt͡ʃiː.da][1]

Forms

frātricīda m (genitive frātricīdae); first declension[1]

Etymology

It is formed from Latin frāter (“brother”) + -cīda;[2] the TLL and Georges derive it from the word for brother and caedō (“to kill”).[3][4] The word for brother goes back to Proto-Italic *frāter- and Proto-Indo-European *bʰréh₂-tr- (“brother”);[5] the verb goes back to Proto-Italic *kaid-e/o- and Proto-Indo-European *keh₂id- (“to cut, hew”).[5]

Earliest recorded meaning

It is first found in Cicero (81–43 BC), in his speech De domo sua,[2][6] and in Cornelius Nepos (c. 100–24 BC), whose Life of Timoleon has a mother denouncing her son as fratricidam impiumque (“a fratricide and impious”).[3][6]

Semantic evolution

It always meant the murderer of a brother.[2][7] Medieval writers kept the sense, sometimes using the word as an adjective;[8] Bede applies it to the brother who out of envy killed the just Abel,[9] and an Old English glossary renders it broðorslaga.[9] English borrowed it as fratricide in the mid-15th century, for the person who kills a brother.[10]

Timeline

  • 81–43 BC – Cicero uses it in De domo sua.[2][6]
  • c. 100–24 BC – Cornelius Nepos uses it in his Life of Timoleon.[3][6]
  • mid-15th century – English borrows it as fratricide.[10]

Meanings

Noun

  1. The murderer of a brother, a fratricide.[2][7]

Word family

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  5. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  6. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  8. ^ Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  9. ^ a b Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
  10. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Fratricida.” Etymologically, 7 Nov. 2026, etymologically.com/la/fratricida. Accessed 8 Nov. 2026.

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