San″guine (?), a. [F. sanguin, L. sanguineus, fr. sanguis blood. Cf. Sanguineous.] 1. Having the color of blood; red.
Of his complexion he was sanguine. Chaucer.
Like to that sanguine flower inscribed with woe. Milton.
2. Characterized by abundance and active circulation of blood; as, a sanguine bodily temperament.
3. Warm; ardent; as, a sanguine temper.
4. Anticipating the best; not desponding; confident; full of hope; as, sanguine of success.
Syn. — Warm; ardent; lively; confident; hopeful.