Parasitic means living off another creature and giving nothing back. A parasitic worm.
A successful parasite does not kill its host, which is why the nastiest ones are usually new arrivals. Calling a person or a business parasitic is one of the harder insults in English.
1adjectiveparasiticLiving off another creature and giving nothing back.
“The parasitic infection took four months to identify.”
parasitic is a quality.
Latin
parasītus
Middle French
parasite
English
parasite
English, today
parasitic
Built from
From parasite + -ic. parasite comes from Middle French parasite, from Latin parasītus. From Middle French parasite, from Latin parasitus, from Ancient Greek παράσιτος (“person who eats at the table of another”), from noun use of adjective meaning "feeding beside", from παρά (“beside”) + σῖτος (“food”).
Etymology from Wiktionary, CC BY-SA