Etymologically

adulterinus

Etymology and origin of the Latin word adulterinus

Confidence
Established
Formation
Derivation
First attested
Plautus
Ultimate origin
Latin (adulter)
Etymology tree
inherited borrowed derived
Latin adulter
Latin adulterium
English adultery
Latin adulterinus

Pronunciation

  • IPA (Classical): [a.dʊɫ.tɛˈriː.nʊs][1]
  • IPA (Ecclesiastical): [a.dul.teˈriː.nus][1]

Forms

adulterīnus (feminine adulterīna, neuter adulterīnum); first/second-declension adjective[1]

Etymology

It is from Latin adulter (“adulterous; adulterer”) + -īnus.[2][3][1]

Earliest recorded meaning

The OLD's earliest citation is from Plautus, adulterīna clāvis “a false key”.[2][4] Köbler dates Plautus c. 250–184 BC.[4]

Semantic evolution

Of things it meant adulterated, impure, as in Varro; of documents and coins, forged, counterfeit, as of seals in Cicero and Livy, and adulterīna clāvis a false or duplicate key; and of persons adulterous, born of adultery, as in Pliny's adulterīnō sanguine nātī, or of passions illicit, as in Apuleius.[2][5][6] Lewis & Short also cite it of animals that are not of pure breed.[5]

In Ecclesiastical Latin it meant not genuine, bastard, adulterous.[7] Medieval Latin used it for faked, adulterated and unlawful.[8] English adulterine, French adultérine and Italian and Spanish adulterino are from it.[1]

Timeline

  • c. 250–184 BC – Plautus has adulterīna clāvis.[2][4]
  • 116–27 BC – Varro uses it of adulterated things.[2][4]
  • 81–43 BC – Cicero uses it of forged seals.[6][4]

Meanings

Adjective

  1. (of things) Adulterated, impure.[2]
  2. (of documents, coins) Forged, counterfeit, adulterīna clāvis, a false key.[2]
  3. (of persons) Adulterous; born of adultery, (of passions) illicit.[2][5]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b 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. ^ Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
Cite this entry

“Adulterinus.” Etymologically, 16 Oct. 2026, etymologically.com/la/adulterinus. Accessed 17 Oct. 2026.

Last edited on . ·