side effect
noun
: a secondary and usually adverse effect (as of a drug)
toxic side effects
called also side reaction
Examples of side effect in a Sentence
Nausea and diarrhea are the side effects of the drug.
the harmful side effects of using chemicals to kill insects
The merger created positive side effects for both companies.
Recent Examples on the Web
Protecting Authentic Japanese Whisky The ascent of Japanese whisky on the world’s stage came with an unfortunate side effect: a more deceptive counterpart masquerading under the same name.
—
Chris Perugini, Forbes.com, 5 June 2025
Or could a circular economy, life extension, recycling and reuse be the solution to the space industry's dirty side effects?
—Tereza Pultarova, Space.com, 3 June 2025
Collectively, these studies included over 1.8 million women, a large enough population to enable even rare side effects to emerge from the statistical murk.
—ArsTechnica, 2 June 2025
Nearly four months after The Bachelorette alum opened up about her battle with stage 3 breast cancer — which has since progressed to stage 4 — Thurston, 34, gave a candid update about the difficult side effects of her treatment plan.
—Shania Russell, EW.com, 2 June 2025
See All Example Sentences for side effect
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Chris Perugini, Forbes.com, 5 June 2025
Or could a circular economy, life extension, recycling and reuse be the solution to the space industry's dirty side effects?
—Tereza Pultarova, Space.com, 3 June 2025
Collectively, these studies included over 1.8 million women, a large enough population to enable even rare side effects to emerge from the statistical murk.
—ArsTechnica, 2 June 2025
Nearly four months after The Bachelorette alum opened up about her battle with stage 3 breast cancer — which has since progressed to stage 4 — Thurston, 34, gave a candid update about the difficult side effects of her treatment plan.
—Shania Russell, EW.com, 2 June 2025
See All Example Sentences for side effect
Cite this Entry
“Side effect.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/side%20effect. Accessed 8 Jun. 2025.
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