Etymologically

Etymology and origin of the Latin word postumus

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC Plautus More words from the 3rd century BC
Ultimate origin
Latin post
Etymology tree
inherited borrowed derived
Latin post
Romanian păi
Spanish pues
Latin postumus
From the same root
Latin pōmērium ← post
Latin pōne ← post
Latin posteā ← post
Latin posthāc ← post
Latin postīcus ← post
Latin postilla ← post
Latin postmodo ← post
Latin postquam ← post
Romanian poimâine ← post

Pronunciation

  • Classical: [ˈpɔs.tʊ.mʊs][1]
  • Ecclesiastical: [ˈpɔs.tu.mus][1]

Forms

postumus (superlative, feminine postuma, neuter postumum); first/second declension[1] Köbler also records the spellings posthumus and postomius.[2]

Etymology

It is from Latin post (“after, behind”), with the superlative ending also found in īnfimus.[3] De Vaan lists it with posterus, posterior and postrēmus among the derivatives of post,[4] and Lewis & Short and Georges treat it as the superlative of posterus.[5][6] Wiktionary reconstructs Proto-Italic *postəmmos and compares the Oscan forms posmom and 𐌐𐌖𐌔𐌕𐌌𐌀𐌔 (pustmas).[1]

De Vaan traces post itself to Proto-Italic *posti (“behind, after”) and Proto-Indo-European *pos(ti) (“after”), the primary form being *pos, extended with *-ti.[4]

Earliest recorded meaning

Plautus already has it: Köbler records the noun for a late-born child from him, and de Vaan the personal name Postumus.[2][4] The adjective is found from Cicero on, meaning “last-born, final”.[4]

Semantic evolution

Its first sense was “last-born”: Virgil speaks of a postuma proles whom Lavinia will bring up for a father in his old age.[3][7] In law it named a child born after the father's death, which Ulpian restricts to those born after a parent's death, and a child born after a will had been made, who had to be named as heir.[3] From “last-born” it widened to “last, final”, as in Apuleius' postumae spei, “of a last hope”;[3] Apuleius also uses it of someone outliving himself, and Tertullian of what comes after death.[3][8]

Medieval glossaries render it with Old English words for a child born after the father's death, and British writers used it of such children and, by extension, as a byname.[9] Ecclesiastical Latin also kept the sense “last, hindmost”.[10] The spelling posthumus, from an association with humō (“to bury”) in Late Latin, gave English posthumous.[11]

Timeline

  • c. 250–184 BC – Plautus uses it as a noun for a late-born child.[2]
  • 81–43 BC – Cicero uses it as a noun for a child born after a will was made.[3][2]
  • 116–27 BC – Varro uses it of a child born after the father's death.[7][8][2]
  • 70–19 BC – Virgil uses it for a last-born son.[3][2]
  • c. 125–175 AD – Apuleius uses it in the sense “last, final”.[3][2]
  • before 223 AD – Ulpian defines postumi as those born after the death of a parent.[3][2]
  • mid-15th century – English borrows posthumus as posthumous.[11]

Meanings

Adjective

  1. Last-born, born late in the parents' life.[3][12]
  2. (law) Born after the father's death, posthumous; as a noun, a posthumous child.[3][7][1]
  3. (law) Born after the making of a will.[3]
  4. Last, final.[3][7][10]
  5. Coming after death; surviving.[8]

Word family

  • postumo

Usage notes

As a personal name, Postumus was first a praenomen and later a cognomen;[3] Ovid uses the vocative Postume for a man named Postumius.[3] Bearers include M. Curtius Postumus, a friend of Cicero, C. Rabirius Postumus, whom Cicero defended, and the Ursidius Postumus addressed in Juvenal's sixth satire.[5]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  3. ^ a b c d e f g h i j k l m n o Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  4. ^ a b c d de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b c d Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  8. ^ a b c Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  9. ^ 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 Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  11. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  12. ^ Lewis, Charlton T. (1890), An Elementary Latin Dictionary, New York: American Book Company
Cite this entry

“Postumus.” Etymologically, 14 Nov. 2026, etymologically.com/la/postumus. Accessed 14 Nov. 2026.

Last edited on . ·