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Synonyms

adversely

American  
[ad-vurs-lee] / ædˈvɜrs li /

adverb

  1. in a negative, contrary, or unfavorable way or direction.

    The report details eleven risk factors that the authors believe adversely affect children's development and well-being.


Other Word Forms

Etymology

Origin of adversely

adverse ( def. ) + -ly

Explanation

When something affects you adversely, it's harmful or negative. Holding a cinder block will adversely affect your running speed. When you talk about things that are acting adversely, they are harming something or holding it back in some way. Not getting enough sleep will adversely affect your performance in school. Rain will adversely affect an outdoor wedding. Anything that's making things worse instead of better is adversely influencing the situation. Adversely means something close to badly or harmfully. So when you see this word, you know something is going wrong.

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Vocabulary lists containing adversely

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.

See Examples For:

"We undertook this study to determine if vanillin, a flavor chemical often used in e-cigarettes at high concentrations, could adversely affect the development of young embryos in humans."

From Science Daily Aug. 28, 2026

The United Farm Workers, along with more than a dozen farmworkers, filed a federal lawsuit in California challenging a new Labor Department rule they argue will “undercut and adversely affect” wages paid to U.S. workers.

From Los Angeles Times Aug. 26, 2026

It said it "recognises that prolonged wildfire incidents have the potential to adversely affect local air quality, particularly through increased levels of smoke and particulate matter".

From BBC Aug. 22, 2026

The retailer said it has been adversely affected by the scrapping in 2025 of a tariff exemption for low-value goods entering the U.S., leading to an increase in fulfillment expenses and weighing on overall revenues.

From The Wall Street Journal Jul. 27, 2026

Some very recent work indicates that reproduction of birds may be adversely affected by these and certain other herbicides at levels far below those that cause death.

From "Silent Spring" by Rachel Carson

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