Etymologically

Etymology and origin of the French word virulent

Confidence
Established
Formation
Borrowing
First attested
c. 1370 Gui de Chauliac, Chirurgie More words from the 14th century
Borrowed from
Latin virulentus
Ultimate origin
Latin vīrus
Etymology tree
inherited borrowed derived
Latin vīrus
English virus
Italian virus
Spanish virus
Latin vīrulentus
English virulent
French virulent
From the same root
English viral ← vīrus
English coronavirus ← virus

Pronunciation

  • /vi.ʁy.lɑ̃/[1]

Forms

virulent (feminine virulente, masculine plural virulents, feminine plural virulentes)[1]

Etymology

It is borrowed from Late Latin virulentus (“poisonous”),[2][3][4][1] which is derived from classical vīrus (“plant juice, venom, poison”).[3][5][6] In Late Latin the adjective was said of a venomous snake and, figuratively, of corrosive speech.[2] The noun virulence was borrowed at the same time, from Late Latin virulentia (“stench, infection”).[3]

Wiktionary suggests that the sense “hostile” is probably a semantic loan from English.[1]

Earliest recorded meaning

It first appears about 1370 in the French translation of Gui de Chauliac's Chirurgie, meaning “infectious, contagious”;[2][7] the 1478 Guidon en françois speaks of an ulcere virulente.[2] At first it described an ulcer or a pustule containing corrosive or contagious pus.[3][5]

Semantic evolution

In medicine the adjective was applied to what carries the germ of a disease, then from 1690 to a disease produced by such a germ; this last sense has since disappeared.[3] Lavoisier (1793) used it of a bad smell or taste that betrays something harmful.[3] Following the history of virus, biology took it up in the 19th century for a germ able to multiply in a living body: germe virulent (1866), and Pasteur's virus très virulent (1880).[2][3]

A single 16th-century text (about 1535) calls a Protestant reformer le virulent, one who spreads the venom of error.[2] The lasting figurative sense came in 1751, when Prévost used it of a violent, biting person and of letters full of harshness;[2][3] Voltaire (1768) applied it to a bitter dispute.[2][3]

Timeline

  • c. 1370 – It appears in Gui de Chauliac's Chirurgie, “infectious”.[2]
  • 1478 – The Guidon en françois has ulcere virulente.[2]
  • c. 1535 – An isolated figurative use, “spreading the venom of error”.[2]
  • 1690 – Furetière uses it of a disease caused by a virus.[4][3]
  • 1751 – Prévost uses it of a violent, biting person and of harsh letters.[2][3]
  • 1768 – Voltaire speaks of a dispute bien virulente.[2]
  • 1793 – Lavoisier applies it to a harmful smell or taste.[3]
  • 1866 – Germe virulent: a germ with some degree of virulence.[2][7]
  • 1880 – Pasteur writes of maladies virulentes.[2]

Meanings

Adjective

  1. (medicine, dated) Caused by a virus, infectious: une infection virulente.[2][4][7]
  2. (medicine, dated) Containing a germ of disease.[2][4]
  3. (biology) Of a germ, able to multiply and cause disease, showing a high virulence.[2][7]
  4. Harmful, noxious: une toxine virulente.[2][4]
  5. (figurative) Full of harshness and violence, scathing: un article virulent, also of people, elle s'est montrée virulente envers la direction.[7][2][6]

Word family

  • virulemment

References

  1. ^ a b c d 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 q r s t Trésor de la langue française informatisé (2004), ATILF – CNRS & Université de Lorraine, atilf.fr/tlfi; electronic version of Imbs, Paul; Quemada, Bernard, eds. (1971–1994), Trésor de la langue française, Paris: CNRS / Gallimard
  3. ^ a b c d e f g h i j k l Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ a b c d e Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  5. ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  6. ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  7. ^ a b c d e Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Virulent.” Etymologically, 15 Nov. 2026, etymologically.com/fr/virulent. Accessed 15 Nov. 2026.

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