cheerfully optimistic, hopeful, or confident

a sanguine disposition; sanguine expectations.

reddish; ruddy

a sanguine complexion.

(in old physiology) having blood as the predominating humor and consequently being ruddy-faced, cheerful, etc.

bloody; sanguinary.

blood-red; red.

Heraldry . a reddish-purple tincture.

a red iron-oxide crayon used in making drawings.

noun

sanguineness