Wiktionary
sanguinarian
n. A human who feeds on blood.
Usage examples of "sanguinarian".
This Erich von Harben has never been in Castra Sanguinarius, and my friend here is not himself a Sanguinarian: He is a white barbarian from the outer world, and if his story be true, and I have no reason to doubt it, he came here in search of this Erich von Harben.
We are happier and the Sanguinarians are jealous and their hatred of us has increased.