Etymologically

Etymology and origin of the Latin word occidio

Confidence
Established
Formation
Derivation
First attested
81–43 BC, Cicero
Ultimate origin
Latin occīdō#1
Etymology tree
inherited borrowed derived
Latin occido
Italian uccidere
Latin occidio
From the same root
Latin occidens ← occido
Latin occiduus ← occido

Forms

occīdiō f (genitive occīdiōnis); third declension[1]

Etymology

It is from Latin occīdō1 (“to kill”) + -iō (“noun suffix”).[2][1][3] The TLL refers it to the verb but suggests that it may originally have been formed beside excidiō, excidium and discidium, and compares occīdium.[4] The verb is ob- with caedō (“to cut, kill”), which goes back to Proto-Italic *kaid-e/o- and Proto-Indo-European *keh2id- (“to cut, hew”).[5]

The grammarian Placidus remarks that it is feminine and that it is a better word than occīsiō, since one says occīdī (“to be killed”).[4]

Earliest recorded meaning

Cicero has it first,[6] in the phrase occidione occidere, “to cut down to the last man”, said of a force of cavalry wiped out (Ad familiares 15.4.7) and in a motion in the Philippics (14.36).[7][4] The TLL thinks the phrase arose in military language.[4]

Semantic evolution

L&S note that the word is rare before the Augustan period.[7] Livy uses the set phrase often and also the noun alone: the dictator and the consul beg that victory should not be sought in total slaughter (3.28.9).[7][4] Tacitus has occidione occumbere, “to perish to a man”, and occidioni dari, “to be given over to destruction”.[7][8]

Columella extends it to animals and plants: bees should not be destroyed root and branch, and a whole kind of vine should not be allowed to die out.[7][4] Later writers kept the military phrase, as in Justin's omnes occidione caesi, “all were cut down”.[7][8] The word has no plural.[4]

Timeline

  • 81–43 BC – Cicero writes of cavalry occidione occisus, wiped out.[7][4][6]
  • 59 BC–17 AD – Livy uses the phrase repeatedly and the noun on its own.[4][6]
  • 1st century AD – Columella applies it to bees, seeds and flocks.[4][6]
  • 98–115 AD – Tacitus has occidione occumbere and occidioni dari.[7][6]

Meanings

Noun

  1. Wholesale slaughter, massacre, extermination.[2][7]
  2. occidione occidere (also caedere): to cut down utterly, annihilate.[7][8]
  3. Total destruction of animals or plants.[7][9]

Usage notes

L&S group it with the near-synonyms clades, strages and caedes;[7] the TLL compares internecio.[4]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ Bianchi, Rossella; Lelli, Olga (2014), VOLI: Vocabolario di latino, Florence: Le Monnier
  4. ^ a b c d e f g h i j k Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  5. ^ 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 e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ a b c d e f g h i j k l Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  8. ^ a b c Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  9. ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
Cite this entry

“Occidio.” Etymologically, 25 Oct. 2026, etymologically.com/la/occidio. Accessed 25 Oct. 2026.

Last edited on . ·