bloodthirsty, bloody-minded, sanguinary
Meaning: marked by eagerness to resort to violence and bloodshed; "bloody-minded tyrants"; "bloodthirsty yells"; "went after the collaborators with a sanguinary fury that drenched the land with blood"-G.W.Johnson
Some people are like bloodthirsty wolves: if they see no punishment forthcoming, they will kill men merely for pleasure and diversion.
And right glad was I--for even London shrank with horror at the news--to escape a man so bloodthirsty, savage, and even to his friends (among whom I was reckoned) malignant.
She knew enough about him by now to understand that he would never abandon those who trusted in him, that he would not turn his back from danger, and leave the Comte de Tournay to fall into the bloodthirsty hands that knew of no mercy.
Some of the neighboring tribes continually endeavored to purchase captives for the pleasure of killing them, but it is satisfactory to learn that no sales are recorded, as the anticipated ransom was always largely in excess of the sums offered by the bloodthirsty natives.
He might easily have done that . . . yes . . . quite easily . . . and . . . besides . . . what connection could there be between her exquisite dandy of a husband, with his fine clothes and refined, lazy ways, and the daring plotter who rescued French victims from beneath the very eyes of the leaders of a bloodthirsty revolution?