Etymologically

Etymology and origin of the Latin word ostentus

Confidence
Established
Formation
Derivation
First attested
86–34 BC, Sallust
Ultimate origin
Latin (ostendō)
Etymology tree
inherited borrowed derived
Latin ostendo
Latin ostentus

Forms

ostentus m (genitive ostentūs); fourth declension[1][2]

Etymology

It is from Latin ostendō (“to show”) + -tus, a verbal noun.[1][3] De Vaan counts the verb among the compounds of tendō (“to stretch”), which goes back to Proto-Italic *tend- and the root Proto-Indo-European *ten- (“to stretch”).[4]

Earliest recorded meaning

Köbler and the OLD record it first in Sallust (86–34 BC), in the dative ostentui: a speaker says he was born to be a display of Jugurtha's crimes, and Metellus believes that the signs of surrender are a mere show, laid to draw him into an ambush.[1][5]

Semantic evolution

It is a rare word, used by Sallust, Tacitus and later writers, nearly always in the dative singular ostentui “for show, as a display”.[3][1] Tacitus has bodies thrown outside the rampart as a public spectacle, a prisoner sent to be shown to the nations, a man allowed to live as a display of the ruler's clemency, and new laws given to Cappadocia more for show than to last.[1][6] Gellius uses the ablative of a punishment made horrible as a display of cruelty.[1][6] The grammarian Charisius reports that some placed ostentui among the adverbs, and the glossaries explain it as “visibly”.[3] Ecclesiastical Latin keeps the sense of a display or spectacle.[7]

Timeline

  • 86–34 BC – Sallust uses ostentui of a proof and of a deceptive show.[1][5]
  • AD 98–115 – Tacitus uses it of public spectacle and display.[1][5]
  • c. 165 AD – Gellius uses it of a display of cruelty.[1][5]

Meanings

Noun

  1. A presentation to view, display, exhibition; a public spectacle.[1][6]
  2. A misleading display, pretence, mere show.[1][6]
  3. A demonstration or proof (of a fact); a practical display (of a quality).[1][6]

Usage notes

L&S, Georges and Conte also list ostentus, -a, -um as the perfect participle of ostendō.[6][2][8]

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 Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  3. ^ a b c Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ 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 Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c d e f Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  7. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  8. ^ Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
Cite this entry

“Ostentus.” Etymologically, 20 Oct. 2026, etymologically.com/la/ostentus. Accessed 20 Oct. 2026.

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