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.

If left untreated, those conditions could become life-threatening.

From BBC • Jun. 8, 2026

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

From Barron's • Jun. 4, 2026

When the researchers then created small wounds, the treated mice healed more quickly than untreated mice.

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

This did not happen on nearby untreated areas.

From "Silent Spring" by Rachel Carson