parasitic, parasitical -- (relating to or caused by parasites; "parasitic infection")
epenthetic, parasitic -- (of or pertaining to epenthesis)
parasitic, parasitical, leechlike, bloodsucking -- (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")