Etymologically

perduellis

Etymology and origin of the Latin word perduellis

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin duellum
Etymology tree
inherited borrowed derived
Latin duellum
English duel
Latin perduellis

Pronunciation

  • Classical: [pɛr.duˈɛl.lɪs][1]
  • Ecclesiastical: [per.duˈɛl.lis][1]

Forms

perduellis m (genitive perduellis); third declension[1] An old genitive plural perduellum occurs in Accius.[2][3]

Etymology

It is from Latin per- + duellum (“war”), the old form of bellum.[2][4][1] The TLL suggests that the form with ⟨du⟩ survived because perduelliō had become a legal term, comparing rebellis beside rebellō; de Vaan reports Meiser's view that legal terminology preserved it.[4][5]

Earliest recorded meaning

It is found from Plautus on,[5][4][6] in elevated language:[4] the Amphitruo tells how its hero defeated the enemy.[4]

Semantic evolution

In early Latin it was the word for a foreign enemy at war with one's own people;[2][3] Plautus also transfers it to a private enemy in the Pseudolus.[7][8] Ennius and Accius use it, and Livy keeps it in formal language such as a solemn prayer of Scipio and a decree of the senate.[4][3] By Cicero's time it was archaic: Varro explains that hostis, once “foreigner”, had come to mean what the ancients called perduellis, and Cicero notes in the De officiis that the milder hostis had replaced it.[4][3] After Cicero it appears mainly where the meaning is explained or old language is imitated;[4] later it was revived in a sense mixed with that of perduelliō, “traitor, rebel”, twelve times in Ammianus Marcellinus.[4]

Glossaries explain it as an enemy or warrior.[4] In British medieval Latin it meant an enemy, a fighter, and as an adjective hostile or rebellious.[9]

Timeline

  • c. 250–184 BC – Plautus uses it of the national enemy.[4][6]
  • 204–169 BC – Ennius uses it.[4][6]
  • 170–c. 90 BC – Accius uses the genitive plural perduellum.[2][6]
  • 116–27 BC – Varro explains it as the old word for hostis.[4][6]
  • 81–43 BC – Cicero comments on its replacement by hostis.[4][6]
  • c. 390 AD – Ammianus Marcellinus uses it twelve times in a sense close to “rebel”.[4][6]

Meanings

Noun

  1. A member of a nation at war with one's own, a public enemy.[2][3]
  2. (figurative) A personal enemy.[7]
  3. (Late Latin) A traitor, rebel.[4]
  4. (Medieval Latin) A fighter; as an adjective, hostile, rebellious.[9]

Word family

  • perduelliō

Usage notes

Cicero says that a pirate is not counted among the perduellēs but is the common enemy of all.[3][4] The related perduelliō meant high treason.[5]

References

  1. ^ a b c d 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 d e f Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b c d e f g h i j k l m n o p q Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  5. ^ a b c 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 f g Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  8. ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  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
Cite this entry

“Perduellis.” Etymologically, 20 Oct. 2026, etymologically.com/la/perduellis. Accessed 22 Oct. 2026.

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