- parasitic, parasitical - relating to or caused by parasites; "parasitic infection"
- 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"
Antonym: independent (indirect, via dependent)