as in detrimental
causing or capable of causing harm
DDT has been proven to be extremely harmful to the environment
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Example Sentences
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Recent Examples of harmful
While well-intentioned, this mandate is costly and ultimately more harmful than helpful.
—
Katherine Hofmann,
STAT,
30 June 2026
Warm, sunny days contribute to harmful levels of ozone being created.
—
Paula Wethington,
CBS News,
29 June 2026
As a bonus, health-conscious shoppers will love that the fabric is OEKO-TEX certified and free of any harmful substances.
—
Cheryl Wagemann,
InStyle,
29 June 2026
Dogs, however, remain heavily restricted due to high heat and the presence of harmful cyanobacteria and cyanotoxins in the Virgin River.
—
Rebecca R. Norris,
USA Today,
29 June 2026
See All Example Sentences for harmful
Katherine Hofmann,
STAT,
30 June 2026
Warm, sunny days contribute to harmful levels of ozone being created.
—
Paula Wethington,
CBS News,
29 June 2026
As a bonus, health-conscious shoppers will love that the fabric is OEKO-TEX certified and free of any harmful substances.
—
Cheryl Wagemann,
InStyle,
29 June 2026
Dogs, however, remain heavily restricted due to high heat and the presence of harmful cyanobacteria and cyanotoxins in the Virgin River.
—
Rebecca R. Norris,
USA Today,
29 June 2026
See All Example Sentences for harmful
Recent Examples of Synonyms for harmful
Adjective
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And beneath the surface of those turquoise waters, marine life continues on without knowing their life is colliding in detrimental-to-them ways.
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Substance abuse is greatly detrimental in its own right, of course, but sometimes the issues that stem from it—stress, emotional exhaustion, secrecy, avoidance—can have similarly devastating long-term effects on a person’s wellbeing.
Adjective
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Each specimen was weighed and put in the same-sized containers filled with superworm larvae to determine the optimal ratio of larvae to specimen for thorough cleaning without damaging bones.
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And such a gap can be far more damaging than any technology shortfall.
Adjective
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Others develop dangerous fluctuations in blood pressure and abnormal heart rhythms because the autonomic nervous system becomes affected.
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Sometimes, the streets appear glittering; other times, seedy and dangerous.
Adjective
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In pharmacogenomics, understanding how genes affect drug efficacy helps doctors prescribe the right drug at the optimal dose while reducing adverse reactions.
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Johnson was undone by revelations of his conduct during Covid lockdowns and Truss by the adverse market reaction to her 2022 mini-Budget.
Adjective
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That if you were deemed, as an enslaved person, if you were deemed troublesome or in some way unwanted, you would literally be sold down the river from the more northern states to the deeper south where you would potentially be treated even worse.
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Offer Real Value, Not Leftovers Most product bundles fail not because the idea is bad but because the execution misses what consumers actually want.
Cite this Entry
“Harmful.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/harmful. Accessed 5 Jul. 2026.
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