Etymologically

occasio

Etymology and origin of the Latin word occasio

Confidence
Established
Formation
Derivation
First attested
Plautus
Ultimate origin
Latin (cadō)

Pronunciation

  • IPA (Classical): [ɔkˈkaː.si.oː][1]
  • IPA (Ecclesiastical): [okˈkaː.s̬i.o][1]

Forms

occāsiō f (genitive occāsiōnis); third declension[1]

Etymology

It is from occidō “to fall, happen”, with the suffix -tiō, so first “a falling out, happening”.[2][3][1] Occidō is from ob- and cadō “to fall”.[4][1] Festus defines it as the opportune moment that comes by chance.[3]

Earliest recorded meaning

De Vaan dates it from Plautus, whose character is told he still has a chance to leave.[4][2] Köbler dates Plautus c. 250–184 BC.[5]

Semantic evolution

It meant favourable circumstances for an action, the right moment, an opportunity, the Greek εὐκαιρία, often with a genitive of the action, as abeundī occāsiō “a chance to get away”.[2][6] In the jurist Paulus it meant a contingency, accident.[2] The Appendix Probi corrects occansio to occāsiō.[7]

In Late and Medieval Latin it meant a cause or reason, a pretext, and a seizing of the opportunity.[8][9] Through Old French ochaison it survives in Italian cagione “cause”.[1] English occasion is recorded in the late 14th century.[10]

Timeline

  • c. 250–184 BC – Plautus uses it of a chance to leave.[2][5]
  • 81–43 BC – Cicero equates it with Greek εὐκαιρία.[6][5]
  • late 14th century – English occasion is recorded.[10]

Meanings

Noun

  1. An opportunity, the right moment.[2]
  2. A contingency, accident.[2]
  3. (Late Latin) A cause, reason; a pretext.[8]

Word family

  • occāsiuncula

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b 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 c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  7. ^ Appendix Probi, a late antique list of correct and censured Latin word forms ("calida non calda"); ed. H. Keil, Grammatici Latini IV, Leipzig 1864, 197–199.
  8. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  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 Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Occasio.” Etymologically, 16 Oct. 2026, etymologically.com/la/occasio. Accessed 16 Oct. 2026.

Last edited on . ·