Etymologically

Etymology and origin of the Latin word dubie

Confidence
Probable
Formation
Derivation
First attested
81–43 BC, Cicero
Ultimate origin
Proto-Indo-European (*dui-bʰh₂u-o-)
Etymology tree
inherited borrowed derived
Latin dubius
Latin dubie

Forms

dubiē (not comparable)[1]

Etymology

It is from Latin dubius (“doubtful”) + -ē, the adverb of the adjective.[2][1] De Vaan derives dubius from an older adjective “in doubt”, perhaps from Proto-Italic *du(i)-fwo- and Proto-Indo-European *dui-bʰh₂u-o- (“double, of two forms”), with the root “to be, become”; he compares Ancient Greek διφυής (diphuḗs, “with two shapes”).[3]

Earliest recorded meaning

Köbler's first source is Cicero,[4] who speaks of a sign given doubtfully being taken as certain.[2][5]

Semantic evolution

It means hesitatingly, as Ovid's Pygmalion rejoicing hesitantly and afraid of being deceived, or uncertainly and ambiguously.[2] Lewis & Short note that it is used mostly with a negative, especially from Augustus on: haud dubiē “undoubtedly, certainly”, as Sallust's “now undoubtedly the victor”, occurs about seventy times in Livy and also in Tacitus and Suetonius, while Cicero has nōn dubiē only once.[5]

Timeline

  • 81–43 BC – Cicero of a doubtful sign and of a report not in doubt.[2][5][4]
  • 86–34 BC – Sallust of a man undoubtedly the victor.[5][4]
  • 59 BC–17 AD – Livy often has haud dubiē.[5][4]
  • 43 BC–18 AD – Ovid of hesitant joy.[2][4]

Meanings

Adverb

  1. Hesitantly, with hesitation.[2][1]
  2. Uncertainly, doubtfully, ambiguously.[2][5][1]
  3. With a negative, haud dubiē, nōn dubiē: undoubtedly, certainly.[5]

References

  1. ^ a b c d 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. ^ 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 g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
Cite this entry

“Dubie.” Etymologically, 19 Oct. 2026, etymologically.com/la/dubie. Accessed 20 Oct. 2026.

Last edited on . ·