Examples of harmful in a Sentence
DDT has been proven to be extremely harmful to the environment.
Recent Examples on the Web
That flood irrigation raised the water table so high that brackish groundwater brought harmful salt concentrations right to the roots of crops.
—
Brandon Loomis, AZCentral.com, 15 Dec. 2025
Don't add any oils or ointments to the water, change the water daily, and clean a humidifier every few days to prevent harmful contaminants from growing or collecting in your humidifier.
—Brandee Gruener, Southern Living, 15 Dec. 2025
California lawmakers have considered many of the ways in which both junk and ultraprocessed foods may be harmful to human health — ingredients such as nonnutritive sweeteners; additives such as emulsifiers, stabilizers and thickeners; flavor enhancers; a host of food dyes and more.
—Sandee Lamotte, CNN Money, 14 Dec. 2025
That is one reason James Monsees and Adam Bowen founded the vape company JUUL Labs, as a potentially less harmful alternative for adult smokers.
—Max Cunningham, Fortune, 14 Dec. 2025
See All Example Sentences for harmful
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Brandon Loomis, AZCentral.com, 15 Dec. 2025
Don't add any oils or ointments to the water, change the water daily, and clean a humidifier every few days to prevent harmful contaminants from growing or collecting in your humidifier.
—Brandee Gruener, Southern Living, 15 Dec. 2025
California lawmakers have considered many of the ways in which both junk and ultraprocessed foods may be harmful to human health — ingredients such as nonnutritive sweeteners; additives such as emulsifiers, stabilizers and thickeners; flavor enhancers; a host of food dyes and more.
—Sandee Lamotte, CNN Money, 14 Dec. 2025
That is one reason James Monsees and Adam Bowen founded the vape company JUUL Labs, as a potentially less harmful alternative for adult smokers.
—Max Cunningham, Fortune, 14 Dec. 2025
See All Example Sentences for harmful
Cite this Entry
“Harmful.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/harmful. Accessed 17 Dec. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share