parasites

NOUN

something that exists by taking from or depending on another

Synonyms

STRONG

barnacle bloodsucker bootlicker deadbeat dependent flunky freeloader groupie hanger-on idler leech scrounger sponge stooge sucker sycophant taker

Antonyms

WEAK

blessing

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Parasites can, in part, be avoided by thoroughly washing your hands, as well as any fruit and vegetables, before cooking and eating.

From BBC • Feb. 4, 2026

Parasites in California freshwater fish can cause gastrointestinal problems, weight loss and lethargy.

From Los Angeles Times • Aug. 5, 2025

This fear makes evolutionary sense: Parasites aren't technically predators, but they can cause serious harm as they leech off of their hosts.

From Salon • May 18, 2025

"Parasites are becoming less susceptible to the few anthelmintic drugs available, so there's an urgent need to find new compounds."

From Science Daily • May 8, 2024

Parasites and predators of the gypsy moth achieved good control, as did the Tiphia wasp against the Japanese beetle.

From "Silent Spring" by Rachel Carson