Etymologically

adulter

Etymology and origin of the Latin word adulter

Confidence
Probable
Formation
Back-formation
First attested
Plautus
Ultimate origin
Latin (alter)
Etymology tree
inherited borrowed derived
Latin adulter
Latin adulterium
English adultery

Pronunciation

  • IPA (Classical): [aˈdʊɫ.tɛr][1]
  • IPA (Ecclesiastical): [aˈdul.ter][1]

Forms

adulter m (genitive adulterī); second declension[1]

Etymology

It is perhaps a back-formation from adulterō “to commit adultery, falsify”, from ad- and alter “other”.[2][1][3] Festus explained it as one who goes to another man's wife or another woman's husband.[4]

Earliest recorded meaning

Köbler's first source is Plautus, whom he dates c. 250–184 BC.[5]

Semantic evolution

As a noun it meant an illicit lover, adulterer, as in Cicero, with the feminine adultera, and Virgil and Horace call Paris and Helen adulter and adultera.[2][6] As an adjective it meant adulterous, unchaste, as Horace's hair curled like a lover's and Ovid's adulterous thoughts, and of things impure, adulterated, cross-bred or debased, with adultera clāvis “a skeleton key”.[2][4]

In Medieval Latin it meant spurious, illegitimate, and unauthorized.[7][8] It survives in French adultère and Spanish adúltero.[1] English adultery came about 1300 through Old French avouterie, from avoutre “adulterer”.[3]

Timeline

  • c. 250–184 BC – Plautus uses it.[5]
  • 81–43 BC – Cicero uses it of adulterers.[6][5]
  • 70–19 BC – Virgil calls Paris the Trojan adulterer.[6][5]
  • c. 1300 – English adultery is recorded.[3]

Meanings

Noun

  1. An adulterer, illicit lover.[2]

Adjective

  1. Adulterous, unchaste.[2]
  2. Impure, adulterated; debased, adultera clāvis, a skeleton key.[2]
  3. (Medieval Latin) Spurious; illegitimate.[7]

Word family

  • adulterīnus
  • adulterio
  • adultera
  • adulteritas
  • adulterium
  • adulterātiō
  • adulterātor
  • adulterātrīx
  • adulterō
  • alter
  • English adultery

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b c d 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. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  8. ^ 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

Derived terms

Cite this entry

“Adulter.” Etymologically, 16 Oct. 2026, etymologically.com/la/adulter. Accessed 16 Oct. 2026.

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