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harmful

[hahrm-fuhl] / ˈhɑrm fəl /


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.

The European Chemicals Agency classifies the chemical as harmful to aquatic life.

From Science Daily • Jun. 9, 2026

The researchers also warn that amoebae can act as living shelters for other harmful microbes.

From Science Daily • Jun. 6, 2026

"It is quite terrifying," Dr Ayer says, "This stuff is designed for the anti-ageing market. At best, they don't need these products. At worst, they contain harmful ingredients that can damage delicate young skin."

From BBC • Jun. 6, 2026

The burning of coal is one of the largest drivers of air pollution, releasing fine particles known to be harmful to respiratory and cardiovascular health.

From Los Angeles Times • Jun. 4, 2026

Advocates of “co-sleeping,” meanwhile, warn that sleeping alone is harmful to a baby’s psyche and that he should be brought into the “family bed.”

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt




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