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

At the same time, dissolved salts and minerals are guided away from the active area and deposited onto untreated sections of the panel called passive regions.

From Science Daily • May 31, 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

Dr. Benedikt Amman, who heads the research center at Barcelona’s Hospital del Mar, has pioneered studies showing that untreated trauma can have a “global” effect on health.

From The Wall Street Journal • May 26, 2026

This did not happen on nearby untreated areas.

From "Silent Spring" by Rachel Carson