Of plants or persons; having the nature or habits of a parasite or leech; living off another. Synonyms:leechlike, parasitic, parasitical."Parasitic vines that strangle the trees" , "Bloodsucking blackmailer" , "His indolent leechlike existence"
... aggressiveness against the great captain and statesman who made not only modern France, but modern Europe; and who at any time during his reign could, by making a sign, as he has said, have had the nobles of France massacred. These bloodsucking creatures were always in the road of reform, always steeped overhead in political intrigue, always concerned in plots against the life of Napoleon, and always shrieking with resentment when they and their accomplices were caught. Some writers ... — The Tragedy of St. Helena • Walter Runciman