parasitical

Adj.	1.	parasitical - relating to or caused by parasites; "parasitic infection" Synonyms: parasitic
	2.	parasitical - 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" Synonyms: leechlike, bloodsucking, parasitic

bloodsucking, dependent, leechlike, parasitic