English Reference
adjective

sanguine

adj.
US /ˈsæŋɡwɪn/ UK /sˈæŋɡwɪn/ san·guine UK spelling sanguines

  1. 01 C1 Advanced Formal

    feeling positive and hopeful that something will be successful.

    optimistic or positive, especially in an apparently bad or difficult situation.

    Simple

    The director is sanguine about the company's chances of success next year.

    In context

    Despite the recent economic downturn, the chairman remained remarkably sanguine about the firm's long-term growth prospects.

    Usage

    Often followed by the preposition 'about'.

  2. 02 C2 Proficiency Literary

    having the deep red colour of blood.

    having the colour of blood; blood-red in hue.

    Simple

    The setting sun gave the clouds a sanguine glow.

    In context

    The poet described the warrior's sanguine cloak, which matched the stained earth of the battlefield.

    palepallid
  3. 03 C2 Proficiency ArchaicTechnical Medicine

    an old medical term for a person who is naturally cheerful and has a red face.

    relating to the 'sanguine' temperament in medieval physiology, characterized by a dominance of blood, ruddy complexion, and a courageous or hopeful nature.

    Simple

    In old books, a sanguine man was thought to be happy and healthy.

    In context

    Medieval physicians categorized him as having a sanguine temperament, attributing his high spirits to an abundance of blood.

    Teacher's tip

    This sense is historical; modern speakers only use 'sanguine' to mean optimistic.

    melancholicphlegmatic

But Sage is sanguine about experiencing a typically chaotic first transfer window in south London, and relieved to be able to concentrate on events on the pitch before Saturday’s trip to Fulham.

The Guardian· 4 Sept 2026

Oumy has starred in some films, but Garrel seems sanguine about the fact that the acting dynasty that shares his name may come to an end with his children.

The Guardian· 28 Aug 2026

From Middle English sanguine, from Old French sanguin, ultimately from Latin sanguineus (“of blood”), from sanguis (“blood”) (of uncertain origin, but probably from Proto-Indo-European h₁sh₂-én-, from h₁ésh₂r̥ (“blood”), with an obscure suffix such as *-ǵʰ- (related to body parts)) + -inus + -eus. Doublet of sanguineous.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin sanguineus
Level C2 · Proficiency
Frequency Occasional
Updated