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
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
- To lie on, recline; to sit on eggs; to rest on; to brood over.[2][4][1][5]
- To dwell in a place; to sleep in a temple for dreams or healing.[2][1]
- To lean or hang over.[2]
- To fall upon.[2]
- To keep jealous watch over; to brood over.[2][1]
Word family
- incubātiō
- incubator
- incubitus
- incubus
- superincubō
Related words
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
- ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ 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
- ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ 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.
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