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

They were more successful at identifying familiar objects, recognizing new ones, and detecting changes in their surroundings compared to untreated controls.

From Science Daily • May 26, 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

Melanoma is the most serious form of skin cancer and, untreated, can be deadly.

From BBC • May 21, 2026

Many workers have noticed the tendency of resistant flies to rest more on untreated horizontal surfaces than on treated walls.

From "Silent Spring" by Rachel Carson