Etymologically

Etymology and origin of the Latin word indormio

Confidence
Established
Formation
Derivation
First attested
81–43 BC, Cicero
Ultimate origin
Latin dormiō
Etymology tree
inherited borrowed derived
Latin dormio
French dormir
Italian dormire
Latin indormio
French endormir
From the same root
English dormant ← dormio
Latin dormito ← dormio

Pronunciation

  • Classical: [ɪnˈdɔr.mi.oː][1]
  • Ecclesiastical: [inˈdɔr.mi.o][1]

Forms

indormiō (present infinitive indormīre, perfect active indormīvī, supine indormītum); fourth conjugation[1]

Etymology

It is from Latin in- + dormiō (“to sleep”).[2][3][1] dormiō goes back to Proto-Italic *dormje/o- and Proto-Indo-European *drm-i̯e- (“to sleep”),[4] and is cognate with Ancient Greek δαρθάνω (darthánō, “to fall asleep”).[4]

Earliest recorded meaning

The TLL finds it from Cicero on,[3][5] who uses it figuratively of someone asleep over a matter: in the Philippics he asks whether torches are needed to wake “you” as you sleep over so great a cause (tē tantae causae indormientem).[3][6]

Semantic evolution

Cicero also confesses to his brother that he has long been asleep over the task of cultivating a man,[3][7] and Pliny the Younger speaks of being roused from long idleness.[3][7] In the literal sense Horace has someone sleeping on sacks heaped up all around (congestīs undique saccīs indormīs),[2][6] and Petronius someone who fell asleep in another's embrace.[3][6] Curtius uses it of sleeping unaware of one's troubles, and a verse inscription says that fear never slept in a certain Heliades.[3]

In Vegetius' veterinary writings it meant to go numb, of a horse's jaw or shoulder.[3][7]

Timeline

  • 81–43 BC – Cicero uses it of sleeping over an important matter.[3][5]
  • 65–8 BC – Horace uses it of sleeping on heaped-up sacks.[2][5]
  • before 66 AD – Petronius uses it of falling asleep in an embrace.[3][5]
  • 1st century AD – Curtius uses it of sleeping unaware of one's troubles.[3][5]
  • c. 400 AD – Vegetius uses it of a horse's jaw going numb.[3][5]

Meanings

Verb

  1. To sleep in or on something; to fall asleep over it.[2][8][9]
  2. (figurative) To be negligent or careless about something, to sleep over it.[2][7][3]
  3. (veterinary) To go numb.[3][7]

Usage notes

The reading indormiat in Virgil's Georgics (2.506) is a false one for dormiat.[3]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e f g h i j k l m n o Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  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 f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  7. ^ a b c d e Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  8. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  9. ^ Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn

Descendants

Cite this entry

“Indormio.” Etymologically, 21 Oct. 2026, etymologically.com/la/indormio. Accessed 22 Oct. 2026.

Last edited on . ·