Etymologically

credibiliter

Etymology and origin of the Latin word credibiliter

Confidence
Established
Formation
Derivation
First attested
Cicero
Ultimate origin
Proto-Indo-European (*ḱred-dʰeh₁-)
Etymology tree
inherited borrowed derived
Latin credibilis
Latin credibiliter
English incredible

Pronunciation

  • IPA (Classical): [kreː.dɪˈbɪ.lɪ.tɛr][1]
  • IPA (Ecclesiastical): [kre.diˈbiː.li.ter][1]

Forms

crēdibiliter (comparative crēdibilius, superlative crēdibilissimē)[1]

Etymology

It is from Latin crēdibilis (“credible”) + -ter, from crēdō (“to believe”).[2][1] De Vaan traces ⟨crēdō⟩ to Proto-Italic *krezde/o-, from Proto-Indo-European *ḱred-dʰeh₁- (“to place the heart, believe”).[3]

Earliest recorded meaning

Its earliest source is Cicero's speech for Deiotarus.[4][5] Köbler dates Cicero 81–43 BC.[4]

Semantic evolution

It meant in a credible manner, credibly, plausibly, as in Cicero and Quintilian, and Augustine has the comparative crēdibilius.[2][5]

British Medieval Latin used it for credibly.[6]

Timeline

  • 81–43 BC – Cicero uses it.[5][4]
  • c. 35–95/96 AD – Quintilian uses it.[5][4]
  • 354–430 AD – Augustine uses crēdibilius.[5][4]

Meanings

Adverb

  1. Credibly, plausibly.[2][5]

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. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  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 d e f Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  6. ^ 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
Cite this entry

“Credibiliter.” Etymologically, 17 Oct. 2026, etymologically.com/la/credibiliter. Accessed 17 Oct. 2026.

Last edited on . ·