Etymologically

subiunctivus

Etymology and origin of the Latin word subiunctivus

Confidence
Established
Formation
Derivation, Calque
First attested
c. 362 Charisius More words from the 4th century
Ultimate origin
Latin subiungō
Etymology tree
inherited borrowed derived
Latin iungō
French joindre
Latin subiungō
Latin subiūnctīvus
English subjunctive
From the same root
English joiner ← iungō
Latin abiungō ← iungō
Latin adiungō ← iungō
Latin coniungō ← iungō
Latin coniūnx ← iungō
Latin disiungō ← iungō
Latin iniungō ← iungō
Latin iūmentum ← iungō
Latin iūncta ← iungō
Latin iūnctiō ← iungō
Latin iūnctūra ← iungō
Latin iūnctus ← iungō
Latin sēiungō ← iungō
French rejoindre ← joindre

Pronunciation

  • Classical: [sʊb.juːŋkˈtiː.wʊs][1]
  • Ecclesiastical: [sub.juŋkˈtiː.vus][1]

Forms

subiūnctīvus (feminine subiūnctīva, neuter subiūnctīvum); first/second-declension adjective[1] It is also spelled subjūnctīvus.[1][2]

Etymology

It is formed from Latin subiungō (“to subjoin, subordinate”) + -īvus,[1][3] a calque from Ancient Greek ὑποτακτικός (hupotaktikós).[1] Etymonline also takes the Latin name of the mood to be probably a loan translation of the Greek grammatical term by Roman grammarians.[4]

Earliest recorded meaning

Köbler's first record is the grammarian Charisius (about 362 AD),[5] who calls conjunctions such as si and cum subiunctivae, “subjoining”, because they introduce a dependent clause.[2][6]

Semantic evolution

It is a term of the late grammarians: Diomedes and Priscian name the subjunctive mood modus subiunctivus,[3][2] and Priscian also calls subiunctivae the vowels that can follow other vowels.[6][2] Its general sense is “serving to join, connecting”.[2][3] In British Medieval Latin it meant “subjoined, dependent”, and as a noun, or with articulus, the relative pronoun.[7] English subjunctive (adjective 1520s, noun 1620s) comes from it.[4]

Timeline

  • c. 362 AD – Charisius calls subordinating conjunctions subiunctivae.[6][5]
  • 2nd half of the 4th century AD – Diomedes uses modus subiunctivus for the subjunctive mood.[3][5]
  • 6th century AD – Priscian uses it of the mood and of vowels.[3][5]
  • c. 1000 – Ælfric glosses subiunctivum as the relative pronoun.[7][5]
  • 1520s – English has the adjective subjunctive.[4]

Meanings

Adjective

  1. Serving to join, connective.[2][3]
  2. (Late Latin, grammar) Subjunctive: modus subiūnctīvus, the subjunctive mood.[2][3]
  3. (Late Latin, grammar) Of a conjunction: introducing a subordinate clause.[6]
  4. (Late Latin, grammar) Of a vowel: able to follow another vowel.[6]
  5. (Medieval Latin, grammar) Dependent; as a noun, the relative pronoun.[7]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  3. ^ a b c d e f g Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  4. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c d e Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  7. ^ 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

Related etymologies

Cite this entry

“Subiunctivus.” Etymologically, 8 Nov. 2026, etymologically.com/la/subiunctivus. Accessed 8 Nov. 2026.

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