untreated

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.

Left untreated, the infestation can be deadly, and the parasites can quickly spread.

From Barron's • Jun. 4, 2026

Welsh Water said low-levels of cryptosporidium, a parasite which can cause stomach illnesses, were found during initial testing of the untreated water.

From BBC • May 27, 2026

Left untreated or poorly managed, it can increase the risk of heart attacks and strokes and worsen existing heart and kidney disease.

From Science Daily • May 18, 2026

All of those properties stand close to Coronado’s wide, sandy beaches — which means they all face challenges as waters are often fouled by the northward flow of untreated sewage from greater Tijuana.

From Los Angeles Times • May 13, 2026

Kwadzo died one morning, probably from his untreated wound, Amari thought, or maybe from his untreated sorrow, but she could not mourn his loss.

From "Copper Sun" by Sharon M. Draper