Etymologically

Etymology and origin of the Latin word incubo

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin (cubō)
Etymology tree
inherited borrowed derived
Latin cubo
Latin incubo
Latin excubo
Latin excubiae
Latin recubo
Latin accubo

Pronunciation

  • Classical: [ˈɪŋ.kʊ.boː][1]
  • Ecclesiastical: [ˈiŋ.ku.bo][1]

Forms

incubō (present infinitive incubāre, perfect active incubuī, supine incubitum); first conjugation, no passive[1]

Etymology

It is from Latin in- + cubō (“to lie”).[2] Wiktionary reconstructs Proto-Italic *enkubāō.[1] De Vaan reconstructs Proto-Italic *kubā̆je/o- (“to be lying”) for ⟨cubō⟩ and finds its origin uncertain, since the root ⟨*kub-⟩ is limited to Italic and Celtic; cognates are Faliscan cupat (“lies”) and Welsh kyscu (“to sleep”), and Paelignian has the compound ⟨incubat⟩.[3]

Earliest recorded meaning

The OLD's earliest examples are in Plautus: in the Casina a slave will stay put in the country, and in the Curculio a sick pimp sleeps in the temple of Aesculapius.[2][4]

Semantic evolution

Its basic sense is “to lie on, recline”, and of birds “to sit on eggs”, as Ovid's halcyon brooding on her nest over the sea; of burdens it is “to rest on”, and of darkness “to brood over”, as Virgil's black night over the sea.[2][4] It also means to have one's lair or abode somewhere, and to sleep in a temple to receive dreams or healing.[2] In Cicero and Seneca it is to keep jealous watch over wealth, to brood over it.[2][1] The OLD notes that perfect forms ⟨incubuī⟩ are hard to tell from those of incumbō.[2]

Church Latin glosses it “lie in, lie on”.[5]

Timeline

  • c. 250–184 BC – Plautus of sleeping in a temple.[2][4][6]
  • 81–43 BC – Cicero of brooding over money.[2][6]
  • 70–19 BC – Virgil of night brooding over the sea.[2][6]
  • 43 BC–18 AD – Ovid of a bird on its nest.[2][6]
  • 1640s – English incubate is formed from its participle, first in the sense “to brood upon”.[7]

Meanings

Verb

  1. To lie on, recline; to sit on eggs; to rest on; to brood over.[2][4][1][5]
  2. To dwell in a place; to sleep in a temple for dreams or healing.[2][1]
  3. To lean or hang over.[2]
  4. To fall upon.[2]
  5. To keep jealous watch over; to brood over.[2][1]

Word family

  • incubātiō
  • incubator
  • incubitus
  • incubus
  • superincubō

Usage notes

The noun incubō, -ōnis, formed from this verb, is a spirit guarding buried treasure in Petronius and a nightmare spirit that lies on sleepers in Largus.[2][4] Medieval sources use it, with incubus, for an incubus or satyr.[8]

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. ^ 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 d e 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 c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  8. ^ Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
Cite this entry

“Incubo.” Etymologically, 19 Oct. 2026, etymologically.com/la/incubo. Accessed 20 Oct. 2026.

Last edited on . ·