Synonyms for Sanguinary (same or very similar meaning)
WordNet sense 1 (accompanied by bloodshed):
gory, sanguineous, slaughterous, butcherlyWordNet sense 2 (marked by eagerness to resort to violence and bloodshed):
bloodthirsty, bloody-mindedWordNet sense 3 (having or covered with or accompanied by blood):
bloodyFrom the ODE community, based on WordNetadd/edit