Etymologically

Etymology and origin of the Latin word roboro

Confidence
Established
Formation
Derivation
First attested
Lucretius
Ultimate origin
Latin rōbur
Etymology tree
inherited borrowed derived
Latin robur
Latin roboro
From the same root
Latin robustus ← robur
Latin corroboro ← roboro

Pronunciation

  • Classical: [ˈroː.bɔ.roː][1]
  • Ecclesiastical: [ˈrɔː.bo.ro][1]

Forms

rōborō (present infinitive rōborāre, perfect active rōborāvī, supine rōborātum); first conjugation[1] An inscription spells it with ⟨u⟩, robur-.[2]

Etymology

It is from Latin rōbur (“hard oak; strength”) + -ō.[2][1]

Earliest recorded meaning

It is first found in Lucretius, of the body: adulta aetās cum prīmum rōborat artūs, “when ripening age first strengthens the limbs”.[2][3]

Semantic evolution

Lewis & Short call it rare but classical.[3] From the strength of the body it was used of plants made sturdy by the sun, of nests reinforced with straw, and of sounds made fuller.[2] Figuratively Cicero and Horace use it for strengthening qualities and moral character.[2][3]

The Vulgate uses it of strengthening a kingdom,[3] Ecclesiastical Latin also for “to prevail”,[4] and Tertullian and Jerome have the participle rōborātus as an adjective, “strong”.[3]

Timeline

  • 96–55 BC – Lucretius uses it of strengthening the limbs.[2][5]
  • 81–43 BC – Cicero uses it of strengthening a quality by constancy.[2][5]
  • 65–8 BC – Horace uses it of the moral training of the heart.[2][5]
  • 23/24–79 AD – Pliny the Elder uses it of plants and nests.[2][5]
  • c. 165 AD – Gellius uses it of sounds made stronger by an added ⟨h⟩.[2][5]
  • 390–406 AD – The Vulgate uses it of strengthening a kingdom.[3][5]

Meanings

Verb

  1. To make physically strong, strengthen, invigorate (people, limbs, plants, structures, sounds).[2][3]
  2. (figurative) To make more powerful or effective, reinforce; to give moral strength to.[2][3]
  3. (Ecclesiastical Latin) To prevail.[4]

Word family

  • corrōborō
  • irrōborō
  • praeroboratus
  • rōborascō
  • rōborātiō

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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
  3. ^ a b c d e f g h Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  5. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de

Derived terms

Cite this entry

“Roboro.” Etymologically, 20 Oct. 2026, etymologically.com/la/roboro. Accessed 23 Oct. 2026.

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