Etymologically

acetum

Etymology and origin of the Latin word acetum

Confidence
Established
Formation
Derivation
First attested
Plautus
Ultimate origin
Proto-Indo-European (*h₂eḱ-)

Pronunciation

  • IPA (Classical): [aˈkeː.tũː][1]
  • IPA (Ecclesiastical): [aˈt͡ʃɛː.tum][1]

Forms

acētum n (genitive acētī); second declension[1]

Etymology

It is from aceō (“to be sour”), originally the participle of a verb meaning “to turn sour”, with ⟨vīnum⟩ “wine” understood.[2][3] Wiktionary explains the form as from acēscō on the model of ⟨cōnsuētus⟩.[1] De Vaan reconstructs ⟨aceō⟩ as Proto-Italic *akēje/o-, Proto-Indo-European *h₂eḱ-eh₁- (“to be sharp”).[4]

Earliest recorded meaning

Köbler's earliest source is Plautus.[5] Köbler dates Plautus c. 250–184 BC.[5]

Semantic evolution

It meant sour wine, vinegar, and the tang of vinegar, and Cato has vinegar sweetened with honey, and the OLD's first citation is Livy.[2][6] Varro notes that it has no plural.[2]

In Ecclesiastical Latin it means vinegar, acid.[7] DÉRom reconstructs Proto-Romance ⟨*/aˈketu/⟩ “vinegar” and an adjective “sharp-tasting”.[8] It survives as Italian aceto, and Old English eced “vinegar” was borrowed from it.[1][5]

Timeline

  • c. 250–184 BC – Plautus uses it.[5]
  • 234–149 BC – Cato has honeyed vinegar.[6][5]
  • 59 BC–17 AD – Livy uses it.[2][5]

Meanings

Noun

  1. Vinegar, sour wine.[2][3]
  2. The tang of vinegar.[2]

Word family

  • ace"to
  • acētāria
  • acētōsus
  • acētābulum

Usage notes

Pliny the Elder uses an acētum for virgin honey, which Gaffiot and Köbler take as a different word, from Greek ἄκοιτον.[6][5][2]

References

  1. ^ a b c d e 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. ^ 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 d e f g Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  7. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  8. ^ Buchi, Éva; Schweickard, Wolfgang, eds. (2008–), Dictionnaire Étymologique Roman (DÉRom), Nancy: ATILF, http://www.atilf.fr/DERom
Cite this entry

“Acetum.” Etymologically, 17 Oct. 2026, etymologically.com/la/acetum. Accessed 17 Oct. 2026.

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