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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.

According to the WHO, there have been reports this year of some 111,500 cases of disease or infestation due to external parasites.

From BBC • May 2, 2026

While viral infections are the most common cause in the United States, bacteria, parasites and fungi can also cause the condition.

From Los Angeles Times • Apr. 28, 2026

These conditions can facilitate the spread of viruses, bacteria and parasites.

From Los Angeles Times • Apr. 13, 2026

Because these parasites depend on multiple species to survive, their presence can reflect the overall strength of the marine ecosystem.

From Science Daily • Apr. 1, 2026

In the United States our foresters seem to have thought of biological control chiefly in terms of introducing insect parasites and predators.

From "Silent Spring" by Rachel Carson