Of, pertaining to, or having the characteristics of a parasite; parasitic(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "parasitical" in a sentence
"(Paradoxically, the Jews also were accused of being Communists and followers of Rosa Luxemburg, while at the same time called parasitical capitalists.)"
"The dodder is what is called a parasitical plant; that is, a plant that lives entirely on another."
"(George would later apologize for his use of the term "parasitical".)"