Etymologically

Etymology and origin of the Latin word coactor

Confidence
Established
Formation
Derivation
First attested
234–149 BC, Cato
Ultimate origin
Latin (cōgō)
Etymology tree
inherited borrowed derived
Latin ago
French agir
Latin actrix
Latin ambigo
Latin actio
French action
Latin abigo
Latin dego
Latin perago
Latin adigo
Latin activus
English active
English activist
Latin actus
English act
Latin actuosus
Latin actor
English actor
English actress
French acteur
Latin subigo
Latin circumago
Latin agito
French agiter
Latin agitatio
Latin exagito
Latin redigo
Latin agilis
Latin cogo
Latin coactor

Forms

coāctor m (genitive coāctōris, feminine coāctrīx); third declension[1] The spelling coator is found in inscriptions.[2]

Etymology

It is from Latin cōgō (“to drive together, collect”) + -tor,[2][1] formed on its past participle coāctus.[3]

Earliest recorded meaning

Cato has it first,[4] in a sale contract in the De agri cultura, of the man who collects the money.[2][5]

Semantic evolution

In Cicero and Horace it is a collector of payments, such as the proceeds of auctions: Cicero mentions how “our collectors” deal with the one-per-cent charge, and Horace imagines being a praeco or a coactor.[2][5] Inscriptions name a coactor argentarius and a coactor vinarius (of the wine trade).[2][3] Lewis and Short and Gaffiot also take one inscription's coactor as a fuller.[5][6]

Tacitus calls the troops at the rear of a column agminis coactores.[2][5] Seneca uses it figuratively, of someone who needs not only a guide but a helper and, as he puts it, a “compeller”.[2][5]

Timeline

  • 234–149 BC – Cato uses it of the collector of money in a sale.[2][4]
  • 81–43 BC – Cicero mentions collectors of payments.[2][4]
  • 65–8 BC – Horace pairs it with praeco.[2][4]
  • 4 BC–65 AD – Seneca uses it of one who compels.[2][4]
  • 98–115 AD – Tacitus calls the rearguard agminis coactores.[2][4]

Meanings

Noun

  1. A collector of money (of auction proceeds, payments or taxes).[2][5][6]
  2. agminis coactores, the troops bringing up the rear, the rearguard.[2][5]
  3. (figurative) One who compels.[5][6]
  4. A fuller (in an inscription).[5][6]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c d e f g h i Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b c d Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
Cite this entry

“Coactor.” Etymologically, 20 Oct. 2026, etymologically.com/la/coactor. Accessed 20 Oct. 2026.

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