Etymologically

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
Etymology tree
inherited borrowed derived
Latin morbus
Latin morbōsus
From the same root
Latin morbidus ← morbus

Pronunciation

  • Classical: [mɔrˈboː.sʊs][1]
  • Ecclesiastical: [morˈbɔː.s̬us][1]

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

  1. Sickly, diseased, ailing (often of slaves and animals in contracts of sale).[2][5]
  2. Morbidly lustful;[2][5] (with in + accusative) mad about.[2][5]

Word family

  • morbositas

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ 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
  4. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c d e f g h i Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ 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.

Last edited on . ·