Etymologically

Etymology and origin of the Latin word intactus

Confidence
Established
Formation
Derivation
First attested
96–55 BC, Lucretius
Ultimate origin
Proto-Indo-European (*th₂g-to-)
Etymology tree
inherited borrowed derived
Latin intactus
English intact

Pronunciation

  • Classical: [ɪnˈtaːk.tʊs][1]
  • Ecclesiastical: [inˈtak.tus][1]

Forms

intāctus (feminine intācta, neuter intāctum); first/second-declension adjective[1]

Etymology

It is formed from in- (“not”) and ⟨tāctus⟩, the past participle of tangō (“to touch”).[2][1][3] De Vaan traces the participle to Proto-Italic *tagto- and Proto-Indo-European *th₂g-to-, from the root of Ancient Greek τεταγών (tetagṓn, “having seized”) and Gothic 𐍄𐌴𐌺𐌰𐌽 (tēkan, “to touch”); its long ⟨ā⟩ is due to Lachmann's law.[4] The older formation of the same meaning is integer, from Proto-Italic *ntagro- (“untouched”).[4]

Earliest recorded meaning

Köbler gives Lucretius as its first author,[5] and the OLD's examples begin with Cicero, who says that the citadel of Rome remained safe and untouched (incolumis atque intācta).[2]

Semantic evolution

It is untouched, and so undamaged, food uneaten, and wealth not plundered (Horace).[2] Of living beings it is unhurt, as Sallust's “no one escaped unscathed”, of peoples unconquered, as Horace's Briton, and of women virgin, as Virgil's Dido.[2][6] It is also untouched in reputation (Caelius' Hortensius had reached old age without a hiss), unaffected by something, and unused or untried, of land never tilled and oxen never yoked.[2]

Church Latin glosses it “inviolate, untouched, untried”.[7] English intact (mid-15th century) comes from it.[3]

Timeline

  • 96–55 BC – Lucretius.[5]
  • 81–43 BC – Cicero of a city left unharmed.[2][5]
  • 86–34 BC – Sallust of men unscathed.[2][5]
  • 70–19 BC – Virgil of a virgin bride and of untried woods.[2][5]
  • mid-15th century – English intact.[3]

Meanings

Adjective

  1. Not touched, untouched.[2][1][6]
  2. Physically undamaged; uneaten; not plundered.[2][1]
  3. Unhurt, unscathed, (of peoples) unconquered.[2][6]
  4. (of women) virgin, chaste.[2][1]
  5. Unharmed in reputation.[2]
  6. Unaffected (by); unimpaired, whole.[2]
  7. Unused, untried, (of land) untilled, (of oxen) never yoked.[2][1][7]

Usage notes

The OLD also records a rare noun intāctus, -ūs, “intangibility”, in Lucretius,[2] a line that Lewis and Short call an interpolation.[6]

References

  1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b 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 e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  7. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson

Borrowed into

Cite this entry

“Intactus.” Etymologically, 19 Oct. 2026, etymologically.com/la/intactus. Accessed 19 Oct. 2026.

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