parasitic

adjective

• 1(of an organism) living as a parasite:mistletoe is parasitic on trees
• resulting from infestation by a parasite:mortality from parasitic diseases

• 2 derogatory habitually relying on or exploiting others:attacks on the parasitic existence of Party functionaries

• 3 Phonetics (of a speech sound) inserted without etymological justification (e.g. the b in thimble); epenthetic.