Endoparasitic
Part of speech: adjective
Definition: Of or pertaining to endoparasites
Parasite
Part of speech: noun
Definition: A (generally undesirable) living organism that exists by stealing the resources produced/collected by another living organism.A person who relies on other people's efforts and gives little back (originally a sycophant).
Example sentence: It is possible to have a pretty good life and career being a leech and a parasite in the media world, gadding about from TV studio to TV studio, writing inconsequential pieces and having a good time. But in the end you have a great sense of personal dissatisfaction.