Etymologically

foedero

Etymology and origin of the Latin word foedero

Confidence
Established
Formation
Back-formation
First attested
Ammianus
Ultimate origin
Latin (foedus)

Pronunciation

  • IPA (Classical): [ˈfoe̯.dɛ.roː][1]
  • IPA (Ecclesiastical): [ˈfɛː.de.ro][1]

Forms

foederō (present infinitive foederāre, perfect active foederāvī, supine foederātum); first conjugation[1]

Etymology

It is a back-formation from foederātus “allied by treaty”, from foedus, ⟨foederis⟩ “treaty”.[2][3][1]

Earliest recorded meaning

Lewis and Short say the finite verb is late Latin, and cite Ammianus' cum foederārētur concordia “when concord was sealed by treaty”.[4][5] Köbler dates Ammianus c. 390 AD.[6]

Semantic evolution

It meant to seal, ratify an agreement, to establish by treaty, and the glosses render it to join, unite, associate.[2][4][3]

In Ecclesiastical Latin it meant to establish by agreement, make a treaty.[7] Its Late Latin noun foederātiō gave English federation in 1721 through French.[8]

Timeline

  • c. 390 AD – Ammianus uses it of sealing concord.[4][6]
  • 1721 – English federation is recorded, from foederātiō.[8]

Meanings

Verb

  1. To seal by treaty, ratify; to unite, ally.[2][4]

Word family

  • cōnfoederō
  • foederātiō
  • infoederatus

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c 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 Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  6. ^ a b Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  8. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Foedero.” Etymologically, 16 Oct. 2026, etymologically.com/la/foedero. Accessed 16 Oct. 2026.

Last edited on . ·