Synonyms for Bloodsucking (same or very similar meaning)
WordNet sense 1 (of plants or persons; having the nature or habits of a parasite or leech; living off another):
parasitic, leechlike, parasiticalWordNet sense 2 (not independent):
dependentWordNet sense 3 (having or covered with or accompanied by blood):
bloodyFrom the ODE community, based on WordNetadd/edit