Etymologically

infinitivus

Etymology and origin of the Latin word infinitivus

Confidence
Established
Formation
Derivation
First attested
c. 362 Charisius More words from the 4th century
Ultimate origin
Latin īnfīnītus
Etymology tree
inherited borrowed derived
Latin fīnis
French fin
Italian fine
Italian fino
Spanish fin
Latin fīniō
French finir
Italian finire
Latin fīnītus
English finite
Latin īnfīnītus
English infinite
Latin īnfīnītīvus
English infinitive
From the same root
Latin affīnis ← fīnis
Latin cōnfīnis ← fīnis
Latin fīnālis ← fīnis
Latin fīnitimus ← fīnis
Latin fīnus ← fīnis
Latin īnfīnitās ← fīnis
French enfin ← fin
Italian finché ← fino
Italian finora ← fino
Italian perfino ← fino
Spanish fino ← fin
Latin dēfīniō ← fīniō
Latin fīnītiō ← fīniō
Latin fīnītīvus ← fīniō
Latin fīnītor ← fīniō
Latin praefiniō ← fīniō
Italian finito ← finire

Pronunciation

  • Classical: [ĩː.fiː.niːˈtiː.wʊs][1]
  • Ecclesiastical: [iɱ.fi.niˈtiː.vus][1]

Forms

īnfīnītīvus (feminine īnfīnītīva, neuter īnfīnītīvum); first/second-declension adjective[1]

Etymology

It is formed from Latin īnfīnītus (“unlimited, indefinite”) + -īvus,[1][2] and the noun is used elliptically for the infinitive mood, with modus (“mood”) understood.[1] Wiktionary takes it as a loose rendering of Ancient Greek ἀπαρέμφατος (aparémphatos), “not indicated”.[1]

Earliest recorded meaning

A term of the Latin grammarians, it is found with certainty from Charisius on, according to the TLL;[2] Köbler dates Charisius to about AD 362.[3] It names the verb form that is not limited by person or number.[4][5]

Semantic evolution

Diomedes, Martianus Capella, Priscian and Isidore of Seville use it for the infinitive, as an adjective with modus or as a noun on its own.[4][6][7] The TLL notes that manuscripts often confuse it with īnfīnītus.[2] Medieval grammarians kept the term;[8][9] it was also used in the wider sense of unlimited or innumerable.[10][8]

English took it over as an adjective in the mid-15th century and as the noun infinitive in the 1510s.[5]

Timeline

  • c. 362 AD – Charisius uses it as a grammatical term.[2][3]
  • second half of the 4th century AD – Diomedes uses modus infinitivus.[6][3]
  • 5th century AD – Martianus Capella uses it as a noun.[4][3]
  • 6th century AD – Priscian uses it.[6][3]
  • mid-15th century – English borrows it as an adjective.[5]
  • 1510s – The English noun infinitive appears.[5]

Meanings

Adjective

  1. (grammar) Infinitive: modus īnfīnītīvus, the infinitive mood.[4][6][11]
  2. (Medieval Latin) Unlimited, indefinite; innumerable.[10][8]

Noun

  1. (grammar) The infinitive.[4][7][1]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  3. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ a b c d Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  8. ^ a b c Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  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 Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  11. ^ Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
Cite this entry

“Infinitivus.” Etymologically, 7 Nov. 2026, etymologically.com/la/infinitivus. Accessed 8 Nov. 2026.

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