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.

Hidden plumbing errors are sending untreated household sewage into rivers, polluting waterways without residents' knowledge.

From BBC • May 26, 2026

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

From BBC • May 21, 2026

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

From Science Daily • May 20, 2026

Together, these goals “should nearly eliminate 90% of all untreated flows reaching the coast,” according to Chad McIntosh, U.S. commissioner of the International Boundary and Water Commission.

From The Wall Street Journal • May 4, 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