Etymology and origin of the Latin word morbosus
- Confidence
- Established
- Formation
- Derivation
- First attested
- 234–149 BC Cato, De agri cultura More words from the 3rd century BC
- Ultimate origin
- Latin morbus
From the same root
Forms
morbōsus (feminine morbōsa, neuter morbōsum); first/second-declension adjective[1]
Etymology
It is formed from Latin morbus (“disease”) + -ōsus.[2][3][1] De Vaan lists it, from Cato on, among the derivatives of ⟨morbus⟩, which he reconstructs as *mor-fo- and Proto-Indo-European *mor-bho-, both with a question mark.[3]
Earliest recorded meaning
Cato is the first to use it: among the things a farmer should sell off he names the old slave and the sickly slave (servum senem, servum morbosum).[2][3][4]
Semantic evolution
The plain sense, sickly or diseased, is found, according to L&S, only before and after the Classical period, and it was used especially in legal contracts.[2][5] Varro has it of livestock, and Labeo, quoted by Gellius, of a horse.[5] Festus (in Paul's epitome) explains it as a man affected by some disease.[5][6]
Catullus applied it to sexual appetite, “morbidly lustful”, and with in it came to mean mad about something.[2][5] The Priapea have a comparative morbosior.[6]
Timeline
- 234–149 BC – Cato advises selling the sickly slave.[2][4]
- 116–27 BC – Varro uses it of sick livestock.[5][4]
- 81/79–52/50 BC – Catullus uses it of lust.[2][4]
- 1st century AD – The Priapea have the comparative morbosior.[6][4]
- c. 165 AD – Gellius quotes Labeo on a diseased horse.[5][4]
Meanings
Adjective
- Sickly, diseased, ailing (often of slaves and animals in contracts of sale).[2][5]
- Morbidly lustful;[2][5] (with in + accusative) mad about.[2][5]
Word family
- morbositas
References
- ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c 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 f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b c d e f g h i Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b c Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
Cite this entry
“Morbosus.” Etymologically, 13 Nov. 2026, etymologically.com/la/morbosus. Accessed 14 Nov. 2026.
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