Etymologically

Etymology and origin of the Latin word robustus

Confidence
Established
Formation
Derivation
First attested
234–149 BC, Cato
Ultimate origin
Latin (rōbur)
Etymology tree
inherited borrowed derived
Latin robur
Latin robustus

Pronunciation

  • Classical: [roːˈbʊs.tʊs][1]
  • Ecclesiastical: [roˈbus.tus][1]

Forms

rōbustus (feminine rōbusta, neuter rōbustum, comparative rōbustior, superlative rōbustissimus); first/second-declension adjective[1]

Etymology

It is from Latin rōbur (“oak, hard wood; strength”) + -tus.[2][1] De Vaan lists it among the derivatives of ⟨rōbur⟩, which he traces to Proto-Italic *rouþos (“red substance”) and Proto-Indo-European *h₁reudʰ-os (“redness”), cognate with Ancient Greek ἔρευθος (éreuthos, “redness”): the heart of the oak was apparently called “red”.[3] He takes its ⟨ō⟩ for a dialectal, non-Roman trait, so that the base was borrowed from a neighbouring dialect.[3]

Earliest recorded meaning

De Vaan dates it from Cato,[3] who in his work on farming prescribes posts “of oak or of pine”.[2][4]

Semantic evolution

Its first sense is “made of oak, oaken”, used by Cato, Varro and Horace of posts, timber and doors.[2][4] It was soon used of people and animals, “strong, robust”: Cicero contrasts the fairly firm with the most robust, and Catullus has a sturdy neck.[2] From there it meant grown up, physically mature, and of style full and vigorous.[2] It was also said of armies, strong food, firm soil and hardy grain, and of qualities that resist change.[2]

Church Latin glosses it “strong, mighty, firm, robust”.[5] English robust (1540s) comes from it, partly through French robuste.[6]

Timeline

  • 234–149 BC – Cato of oak posts.[2][7]
  • 81–43 BC – Cicero of strong men, a mature age and a vigorous style.[2][7]
  • 1540s – English robust.[6]

Meanings

Adjective

  1. Made of oak, oaken.[2][4][1]
  2. Physically strong, robust; of a voice, powerful; of food, nourishing.[2][1][5]
  3. Grown up, mature; of style, full and vigorous.[2]
  4. Strong in arms.[2]
  5. Of materials, firm, solid; of qualities, durable, hard to change.[2][1]

Word family

  • rōbusteus
  • rōborārium
  • rōborascō
  • rōborātus
  • rōboreus
  • rōborō
  • rōbur
  • rōburneus
  • rōbus
  • rōbustē
  • English robust

Usage notes

Döderlein distinguishes ⟨validus⟩, strong in an active sense (able to do something), from firmus and robustus, strong in a passive sense (able to endure).[8]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c 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 Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  6. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ a b Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  8. ^ Döderlein, Ludwig (1874), Döderlein’s Hand-book of Latin Synonymes, tr. H. H. Arnold, Andover: W. F. Draper
Cite this entry

“Robustus.” Etymologically, 19 Oct. 2026, etymologically.com/la/robustus. Accessed 20 Oct. 2026.

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