Etymologically

externus

Etymology and origin of the Latin word externus

Confidence
Established
Formation
Derivation
First attested
Rhetorica ad Herennium
Ultimate origin
Latin (ex)

Pronunciation

  • IPA (Classical): [ɛkˈstɛr.nʊs][1]
  • IPA (Ecclesiastical): [ekˈstɛr.nus][1]

Forms

externus (feminine externa, neuter externum); first/second-declension adjective[1]

Etymology

It is from exter “outward” with the suffix -nus, like supernus.[1][2][3] Priscian derived it from the adverb extrā.[2]

Earliest recorded meaning

Köbler's first source is the Rhetorica ad Herennium, which he dates 86/82 BC.[4] The OLD's earliest citations are from Cicero.[5]

Semantic evolution

It meant situated outside, external, mare externum the ocean, as Cicero's warmth not to be thought external and adventitious.[5][6] In Cicero it meant not belonging to the thing, extraneous, not intrinsic, and foreign, from abroad, and as a noun a foreigner.[5][7] In Ovid it meant belonging to a stranger.[5] Döderlein explains that exterus and externus denote a foreigner living abroad, while peregrīnus and advena denote one staying for a time.[8]

In Ecclesiastical Latin it meant belonging to another, external.[9] British Medieval Latin used it for foreign, alien, and as a noun a foreigner.[10] It was borrowed into Italian esterno and French externe, and English external came in the early 15th century.[1][3]

Timeline

  • 86/82 BC – The Rhetorica ad Herennium uses it.[4]
  • 81–43 BC – Cicero uses it of the external and the foreign.[5][4]
  • 43 BC–18 AD – Ovid uses it of a stranger's possessions.[5][4]
  • early 15th century – English external is recorded.[3]

Meanings

Adjective

  1. Outside, external, mare externum, the ocean.[5]
  2. Extraneous; not intrinsic.[5]
  3. Foreign; as a noun, a foreigner.[5]

Word family

  • externālis
  • externātus

Usage notes

Döderlein distinguishes it from peregrīnus and advena, a sojourner.[8]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  3. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c d e f g h i Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  6. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  7. ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  8. ^ a b Döderlein, Ludwig (1874), Döderlein’s Hand-book of Latin Synonymes, tr. H. H. Arnold, Andover: W. F. Draper
  9. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  10. ^ 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

“Externus.” Etymologically, 16 Oct. 2026, etymologically.com/la/externus. Accessed 16 Oct. 2026.

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