- Confidence
- Established
- Formation
- Compound
- First attested
- Cato
- Ultimate origin
- Proto-Indo-European (*h₁ey-)
Pronunciation
Forms
coeō (present infinitive coīre, perfect active coiī or coīvī, supine coitum); irregular conjugation[1] Perfect coiī, rarely coīvī, and Quintilian mentions conīre for coīre.[2][3]
Etymology
It is from con- “together” and eō “to go”.[2][1] De Vaan traces ⟨eō⟩ to Proto-Indo-European *h₁ey- (“to go”).[4]
Earliest recorded meaning
The OLD's earliest citations are from Cato, of a wound closing, and Plautus.[2] Köbler dates Cato 234–149 BC.[5]
Semantic evolution
It meant to come together, meet, as in Terence; to have sexual intercourse, as in Plautus; of things to be placed together, to extend so as to meet, as in Ovid; of wounds and broken bones to close up, knit, as in Cato; to crowd together, contract, as in Propertius; to unite into a whole, coalesce, as in Lucretius; to form by condensing, as in Vitruvius; to band together in an alliance, as in Nepos; and transitively to form an alliance or pact, as in Cicero.[2]
In Ecclesiastical Latin it meant to meet, come together, have sexual intercourse.[6] Its nouns coitus and coetus “meeting” come from it.[1]
Timeline
- 234–149 BC – Cato uses it of wounds closing.[2][5]
- c. 250–184 BC – Plautus uses it of intercourse.[2][5]
- 81–43 BC – Cicero uses it of forming an alliance.[2][5]
Meanings
Verb
- To come together, meet.[2]
- To have sexual intercourse.[2]
- (of wounds) To close up, knit.[2]
- To unite, coalesce; to contract.[2]
- To band together; to form (an alliance).[2]
Word family
- coetus
- coitiō
- coitus
Related words
References
- ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k l Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Cite this entry
“Coeo.” Etymologically, 16 Oct. 2026, etymologically.com/la/coeo. Accessed 16 Oct. 2026.
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