See more synonyms for sanguine on
  1. cheerfully optimistic, hopeful, or confident: a sanguine disposition; sanguine expectations.
  2. reddish; ruddy: a sanguine complexion.
  3. (in old physiology) having blood as the predominating humor and consequently being ruddy-faced, cheerful, etc.
  4. bloody; sanguinary.
  5. blood-red; red.
  6. Heraldry. a reddish-purple tincture.
  1. a red iron-oxide crayon used in making drawings.

Origin of sanguine

1275–1325; Middle English sanguyne a blood-red cloth < Old French sanguin < Latin sanguineus bloody, equivalent to sanguin-, stem of sanguis blood + -eus -eous
Related formssan·guine·ly, adverbsan·guin·i·ty, san·guin·ness, nounnon·san·guine, adjectivenon·san·guine·ly, adverbnon·san·guine·ness, nouno·ver·san·guine, adjectiveo·ver·san·guine·ly, adverbo·ver·san·guine·ness, nounpre·san·guine, adjectivequa·si-san·guine, adjectivequa·si-san·guine·ly, adverbsu·per·san·guine, adjectivesu·per·san·guin·i·ty, nounun·san·guine, adjectiveun·san·guine·ly, adverb
Can be confusedsanguinary sanguine

Synonyms for sanguine

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Antonyms for sanguine

1. morose. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for sanguinely

surely, confidently, positively, expectantly, sanguinely

Examples from the Web for sanguinely

Historical Examples of sanguinely

  • “And that will be in France, ere long,” said Constance, sanguinely.

  • He sanguinely looked upon his imprisonment as merely temporary.

    The Boy Broker

    Frank A. Munsey

  • Those who augured so sanguinely for its action and effect were disappointed.

    The Felon's Track

    Michael Doheny

  • But time, she sanguinely believed, would remove every obstacle.

    The Rivals of Acadia

    Harriet Vaughan Cheney

  • He thought the price too low, sanguinely hoped that it would re-ascend, still deferred his purpose, and lost his all.

    Old and New London

    Walter Thornbury

British Dictionary definitions for sanguinely


  1. cheerful and confident; optimistic
  2. (esp of the complexion) ruddy in appearance
  3. blood-red
  4. an obsolete word for sanguinary (def. 2)
  1. Also called: red chalk a red pencil containing ferric oxide, used in drawing
Derived Formssanguinely, adverbsanguineness or sanguinity, noun

Word Origin for sanguine

C14: from Latin sanguineus bloody, from sanguis blood
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sanguinely



"blood-red," late 14c. (late 12c. as a surname), from Old French sanguin (fem. sanguine), from Latin sanguineus "of blood," also "bloody, bloodthirsty," from sanguis (genitive sanguinis) "blood" (see sanguinary). Meaning "cheerful, hopeful, confident" first attested c.1500, because these qualities were thought in medieval physiology to spring from an excess of blood as one of the four humors. Also in Middle English as a noun, "type of red cloth" (early 14c.).

Online Etymology Dictionary, © 2010 Douglas Harper

sanguinely in Medicine


  1. Of a healthy, reddish color; ruddy.
  2. Cheerfully confident; optimistic.
  3. Having blood as the dominant humor in terms of medieval physiology.
  4. Having the temperament and ruddy complexion that was formerly thought to be characteristic of a person dominated by this humor; passionate.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.