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See also: Morbus



From Latin morbus.


morbus (plural morbuses or morbi)

  1. (medicine, formal) A disease.
    • 1838, Thomas Hood, “A Rise at the Father of Angling” in The Comic Annual, page 47:
      I thought he were took with the Morbus one day, I did with his nasty angle!
      For “oh dear,” says he, and burst out in a cry, “oh my gut is all got of a tangle!”
    • 1846, William Andrus Alcott, The Young House-keeper: Or, Thoughts on Food and Cookery (page 214)
      Probably no small share of our cholera morbuses, diarrhœas, and dysenteries, have their origin in this source.
    • 1979, F. Kraupl Taylor, ‎D. M. K. Taylor, The Concepts of Illness, Disease and Morbus (page 117)
      Unfortunately, most of the morbi accepted in modern medicine are only taxonomic entities whose causal derivation is merely partially known and therefore polygenic.




From Proto-Indo-European *mer- (to die), the same root of morī (to die).



morbus m (genitive morbī); second declension

  1. (of the body or mind) a disease, illness, malady, sickness, disorder, distemper, ailment
    Synonyms: aegritūdō, malum, pestis, valētūdō, labor, incommodum, infirmitas
    Antonyms: salūs, valētūdō
    • c. 99 BCE – 55 BCE, Lucretius, De rerum natura 5.220:
      Cur anni tempora morbos adportant?
      Why do the seasons of the year bring maladies?
    • 8 CE, Ovid, Fasti 4.763-764:
      ‘pelle procul morbōs; valeant hominēsque gregēsque,
      et valeant vigilēs, prōvida turba, canēs.’
      ‘‘Drive diseases far away; may both men and flocks be healthy,
      and healthy too the watching dogs, that foreseeing pack.’’

      (A shepherd’s prayer to Pales.)
  2. (of the mind) a fault, vice, failing
  3. (of the mind) Sorrow, grief, distress
  4. death


Second-declension noun.

Case Singular Plural
Nominative morbus morbī
Genitive morbī morbōrum
Dative morbō morbīs
Accusative morbum morbōs
Ablative morbō morbīs
Vocative morbe morbī

Derived terms[edit]

Related terms[edit]



  • morbus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • morbus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • morbus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
  • morbus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette
  • Carl Meißner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • he fell ill: in morbum incidit
    • to be attacked by disease: morbo tentari or corripi
    • to be laid on a bed of sickness: morbo afflīgi
    • to be seriously ill: gravi morbo affectum esse, conflictari, vexari
    • the disease gets worse: morbus ingravescit
    • to be carried off by a disease: morbo absūmi (Sall. Iug. 5. 6)
    • to recover from a disease: ex morbo convalescere (not reconvalescere)
    • to recruit oneself after a severe illness: e gravi morbo recreari or se colligere
    • to excuse oneself on the score of health: valetudinem (morbum) excusare (Liv. 6. 22. 7)
    • to die a natural death: morbo perire, absūmi, consūmi
    • to pretend to be ill: simulare morbum
    • to pretend not to be ill: dissimulare morbum
    • to plead ill-health as an excuse for absence: excusare morbum, valetudinem