Definition of sanguine

• a. - Having the color of blood; red.
• a. - Characterized by abundance and active circulation of blood; as, a sanguine bodily temperament.
• a. - Warm; ardent; as, a sanguine temper.
• a. - Anticipating the best; not desponding; confident; full of hope; as, sanguine of success.
• n. - Blood color; red.
• n. - Anything of a blood-red color, as cloth.
• n. - Bloodstone.
• n. - Red crayon. See the Note under Crayon, 1.
• v. t. - To stain with blood; to impart the color of blood to; to ensanguine.