Etymologically

Etymology and origin of the Latin word infitiae

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin fateor

Forms

īnfitiae f pl (genitive īnfitiārum); first declension; only the accusative īnfitiās is used[1][2][3] Manuscripts often spell it īnficiae.[2][3]

Etymology

The OLD analyses it as from Latin in- (“not”) + *fatus (“said”) + -ia, comparing Ancient Greek φατός (phatós, “said, spoken”).[1] De Vaan, under fateor, likewise takes it to continue a form meaning “unsaid”, *in-fato-.[4] An ancient scholiast on Terence derived it from “not speaking”.[2]

Earliest recorded meaning

It is found first in Plautus,[5][4] where a character asks why someone chooses to deny what has been done.[1]

Semantic evolution

It occurs only in the accusative, in the phrase īnfitiās īre, “to deny”, with an accusative, an accusative and infinitive or quīn.[1][2][3] Except in early Latin it is very rarely used without a negative, so that nōn eō īnfitiās means “I do not deny”; it is not found in Cicero or Caesar.[3][6] Nepos has the parenthesis quod nēmō it īnfitiās, “which nobody denies”.[6][1]

It is also used of disowning obligations or claims, as when Plautus has a man refuse to acknowledge a debt; the jurist Gaius cites an oath that one does not deny a claim in bad faith.[1] Medieval writers kept the phrase, with variants such as in īnfitiās īre, and also used the noun for denial or defamation.[7]

Timeline

  • c. 250–184 BC – Plautus uses īnfitiās īre of denying facts and debts.[1][5]
  • c. 100–24 BC – Nepos writes quod nēmō it īnfitiās.[1][6][5]
  • 59 BC–AD 17 – Livy uses it with an accusative and infinitive.[1][5]
  • 140–180 AD – Gaius uses it of denying a legal claim.[1][5]

Meanings

Noun

  1. denial; only in īnfitiās īre, to deny, refuse to acknowledge as true.[1][3][6]
  2. In the same phrase, to disown or repudiate (an obligation or claim).[1]
  3. (Medieval Latin) Denial; defamation.[7]

References

  1. ^ a b c d e f g h i j k l Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  2. ^ a b c d Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  3. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b 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 Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c d Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
Cite this entry

“Infitiae.” Etymologically, 20 Oct. 2026, etymologically.com/la/infitiae. Accessed 23 Oct. 2026.

Last edited on . ·