Etymologically

Etymology and origin of the Latin word spurius

Confidence
Disputed
Formation
Borrowing
First attested
81–43 BC, Cicero
Borrowed from
Etruscan spural

Pronunciation

  • Classical: [ˈspʊ.ri.ʊs][1]
  • Ecclesiastical: [ˈspuː.ri.us][1]

Forms

spurius (feminine spuria, neuter spurium); first/second-declension adjective[1]

Etymology

The origin is uncertain.[2][1] The OLD and Köbler take it to be probably Etruscan,[2][3] and Etymonline names the source as borrowed from Etruscan spural (“public”).[4] Wiktionary gives that Etruscan explanation beside a derivation from Proto-Indo-European *sper- (“to scatter”) or from *sperH-, the root of spernō;[1] Lewis & Short likewise connect it with Ancient Greek σπείρω (speírō) and σπορά (sporá) and with spernō.[5] Walde asked whether it belongs with spurium (“female genitals”), but thought a link with spurcus (“foul”) more likely.[6]

Ancient grammarians explained it too: the jurist Gaius says such children were given this name either from the Greek σποράδην (sporádēn, “scattered, at random”), as conceived at random, or as sons without a father.[2]

Earliest recorded meaning

The earliest use is the Roman praenomen Spurius: Lewis & Short cite it from Cicero's De re publica, beside the names Spurius Cassius and Spurius Maelius.[5][3]

Semantic evolution

As a praenomen it was usually abbreviated Sp.[5][2] The common noun, for a son whose father was unknown, an illegitimate child, appears only after the Classical period, chiefly in the jurists.[5][2] Georges distinguishes it from nothus, the child of a known father and a concubine.[7] Used as an adjective it meant illegitimate, and in Ausonius also false or supposed.[8]

In medieval Latin it kept the sense of a bastard, also in figurative contexts.[9][10] It passed into English as spurious, first of persons born out of wedlock; about 1600 it was extended to things not properly constituted.[4]

Timeline

  • 81–43 BC – Cicero names men with the praenomen Spurius.[5][3]
  • 59 BC–AD 17 – Livy writes the praenomen abbreviated as Sp.[2][3]
  • c. 125–175 AD – Apuleius uses it for a child of an unknown father.[11][3]
  • 140–180 AD – The jurist Gaius explains the word spurii for such sons.[2][3]
  • c. 310–394 AD – Ausonius uses the adjective for “false, supposed”.[8][3]
  • 1590s – English borrows it as spurious, “born out of wedlock”.[4]

Meanings

Noun

  1. A son of an unknown father; an illegitimate child, a bastard.[2][5][11]
  2. Spurius, a Roman praenomen, abbreviated Sp.[2][5][12]

Adjective

  1. Illegitimate, born out of wedlock.[8][12][10]
  2. False, spurious, supposed.[8][13]
  • English spurious

Usage notes

Georges contrasts spurius, a child of an unknown father by a common prostitute, with nothus, the child of a known father by a concubine.[7]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e f g Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ Walde, Alois (1906), Lateinisches etymologisches Wörterbuch, Heidelberg: Carl Winter
  7. ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  8. ^ a b c d Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  9. ^ Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  10. ^ 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
  11. ^ a b Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  12. ^ a b Bianchi, Rossella; Lelli, Olga (2014), VOLI: Vocabolario di latino, Florence: Le Monnier
  13. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson

Related etymologies

Cite this entry

“Spurius.” Etymologically, 24 Oct. 2026, etymologically.com/la/spurius. Accessed 24 Oct. 2026.

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