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

For women, that could include greater attention to managing depression, increasing physical activity, and improving cardiovascular health, especially untreated hypertension.

From Science Daily • May 20, 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

In the untreated fields there was no trouble; the damage stopped at the border between treated and untreated fields.

From "Silent Spring" by Rachel Carson