Etymologically

conclusivus

Etymology and origin of the Latin word conclusivus

Confidence
Established
Formation
Derivation
First attested
Sulpicius Victor
Ultimate origin
Latin conclūdō
Etymology tree
inherited borrowed derived
Latin claudō
Latin conclūdō
English conclude
French conclure
Spanish concluir
Latin conclūsīvus
English conclusive
From the same root
Latin circumclūdō ← claudō
Latin claustrum ← claudō
Latin clausūra ← claudō
Latin clausus ← claudō
Latin clūsa ← claudō
Latin disclūdō ← claudō
Latin exclūdō ← claudō
Latin inclūdō ← claudō
Latin interclūdō ← claudō
Latin occlūdō ← claudō
Latin praeclūdō ← claudō
Latin rēclūdō ← claudō
Latin sēclūdō ← claudō
Latin conclūsiō ← conclūdō
English inconclusive ← conclusive

Forms

conclūsīvus (feminine conclūsīva, neuter conclūsīvum); first/second-declension adjective[1][2]

Etymology

It is from Latin conclūdō (“to shut up; to conclude”), formed on its past participle conclūsus with the suffix -īvus.[3][2][4]

Earliest recorded meaning

It first appears in the rhetorician Sulpicius Victor, who speaks of a “conclusive quality” in the doctrine of the issues of a case.[3][1]

Semantic evolution

Late Latin also used it of a “conclusive” collection or summary,[3] and Cassiodorus has the adverb conclusive, “in conclusion”.[3] In Medieval Latin it meant “concluding, summarizing”: a treatise on letter-writing names a “conclusive” mark of punctuation, and other writers speak of conclusive arguments, “proving conclusively”.[5][6] In legal use a finis conclusivus was a final decision of a case, as in 15th-century Hungarian documents,[7] and a “conclusive” writing closed the exchange of pleadings.[8] English conclusive (1610s) came from it through French conclusif.[4]

Timeline

  • c. 485–c. 580 AD – Cassiodorus uses the adverb conclusive.[3][2]
  • 1417 – A Hungarian charter speaks of ending a case “with a conclusive end”.[7]
  • 1610s – Borrowed into English, through French, as conclusive.[4]

Meanings

Adjective

  1. (Late Latin, rhetoric) final, concluding.[3][1]
  2. (Medieval Latin) Concluding, summarizing.[5][6]
  3. (Medieval Latin) Proving firmly; conclusive.[5][6]
  4. (Medieval Latin, law) Final, definitive, ending a case.[7][8]

References

  1. ^ a b c Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  2. ^ a b c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  3. ^ a b c d e f Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  6. ^ a b c 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
  7. ^ a b c Bartal, Antal, et al. (1987–), Lexicon Latinitatis Medii Aevi Hungariae, Budapest: Akadémiai Kiadó; online ed. ELTE
  8. ^ a b Lexicon mediae et infimae Latinitatis Polonorum (1953–), Kraków: Instytut Języka Polskiego PAN; electronic ed. elexicon.scriptores.pl
Cite this entry

“Conclusivus.” Etymologically, 7 Nov. 2026, etymologically.com/la/conclusivus. Accessed 8 Nov. 2026.

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