bloodsucking

adjectives

drawing blood from the body of another
"a plague of bloodsucking insects"
bloodsucking
is similar to
having or covered with or accompanied by blood
"a bloody nose"; "your scarf is all bloody"; "the effects will be violent and probably bloody"; "a bloody fight"
bloody
of plants or persons; having the nature or habits of a parasite or leech; living off another
"a wealthy class parasitic upon the labor of the masses"; "parasitic vines that strangle the trees"; "bloodsucking blackmailer"; "his indolent leechlike existence"
bloodsucking, leechlike, parasitic, parasitical