(a.) Attended with much bloodshed; bloody; murderous; as, a sanguinary war, contest, or battle (a.) Bloodthirsty; cruel; eager to shed blood (a.) The Sanguinaria (a.) The yarrow
bloody, gory, sanguineous, bloodthirsty, bloody-minded, butcherly, slaughterous
Example: "This bitter and sanguinary war" Example: "Went after the collaborators with a sanguinary fury that drenched the land with blood-G.W.Johnson"