Etymologically

sanguine

Etymology and origin of the English word sanguine

Confidence
Established
Formation
Borrowing
First attested
1378
Inherited from
Middle English sanguin

Etymology

It is inherited from Middle English sanguin, sangueyn,[1][2][3] borrowed from Old French sanguin (feminine sanguine),[4][1][5][2] from Latin sanguineus (“of blood, bloody, bloodthirsty”),[4][1][5][2] from sanguis (“blood”) (genitive sanguinis),[4][1][5][2] which is of uncertain origin.[3]

Earliest recorded meaning

Blood-red (1378 in Barnhart; 1382 in the OED; late 14th century in Etymonline); it appears as a surname, Sanguin, in 1194.[1][6][5]

Semantic evolution

In medieval physiology a person in whom blood predominated over the other three humours was sanguine (c. 1386),[6][1][7] with a ruddy face and a disposition marked by courage, hope and amorousness.[4][8][7] Chaucer says of his Franklin, “Of his complexioun he was sangwyn”.[9] From this the sense “cheerful, hopeful, confident” arose (1509 in Barnhart; about 1500 in Etymonline).[1][5] The sense “of or containing blood” dates from 1447,[6][5] and “bloodthirsty, sanguinary” from 1705, now only poetic.[6][10] As a noun it names a blood-red colour, a red tincture in heraldry and a red chalk crayon used for drawing.[2][11][10]

Timeline

  • 1194 – the surname Sanguin.[1]
  • 1378 – blood-red.[1][6]
  • c. 1386 – having blood as the dominant humour.[6]
  • 1447 – of or containing blood.[6]
  • 1509 – cheerful, confident.[1]
  • 1705 – bloodthirsty.[6]

Modern meaning

Adjective

  1. Cheerfully confident; optimistic.
  2. Of a healthy, reddish colour; ruddy.
  3. Of the colour of blood; red.
  4. (history) Having blood as the dominant humour, in medieval physiology, and the ruddy complexion and passionate, cheerful temperament thought to go with it.
  5. (obsolete) Bloodthirsty; sanguinary.

Noun

  1. A blood-red colour.
  2. A red chalk or crayon containing iron oxide, used in drawing.

Word family

  • sanguinely
  • sanguineness
  • sanguinity
  • nonsanguine
  • oversanguine
  • unsanguine
  • consanguine
  • exsanguine
  • sanguinary
  • sangaree
  • sangria
  • exsanguinate
  • consanguinity
  • ensanguine
  • humour

Usage notes

Sanguine should not be confused with sanguinary, “bloodthirsty”.[12][4] The two words share their source in Latin sanguis, “blood”; the cheerful sense of sanguine comes from the medieval theory of the humours.[4][8]

References

  1. ^ a b c d e f g h i j Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
  2. ^ a b c d e Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  3. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  4. ^ a b c d e f The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
  5. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ a b c d e f g h Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ a b Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  8. ^ a b From Abracadabra to Zeus: Word Histories and Mysteries (2004), Boston: Houghton Mifflin (American Heritage Dictionaries)
  9. ^ Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
  10. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins
  11. ^ Random House Webster's Unabridged Dictionary (1999), 2nd ed., New York: Random House
  12. ^ Wiktionary, the free dictionary, https://en.wiktionary.org

Related etymologies

Cite this entry

“Sanguine.” Etymologically, 12 Oct. 2026, etymologically.com/en/sanguine. Accessed 12 Oct. 2026.

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