REACTION Synonyms: 17 Similar and Opposite Words

reaction

noun

rē-ˈak-shən

Definition of reaction

as in response

action or behavior that is done in return to other action or behavior we were startled by her extreme reaction to being jilted by her boyfriend

Synonyms & Similar Words

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Example Sentences

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Recent Examples of reaction Instead of relying on additional chemical reagents to trigger the reactions needed to capture and release metals, the researchers can use an electrical signal. — Neetika Walter, Interesting Engineering, 14 Aug. 2026 Patients should be encouraged to ask who manufactured the product, why it is being recommended, whether FDA has evaluated it and how to report an adverse reaction. — Washington Post, 14 Aug. 2026 As a former hockey player, what’s your reaction to seeing the sport enter the pop culture zeitgeist with recent shows like Heated Rivalry and Off Campus? — Carly Thomas, HollywoodReporter, 14 Aug. 2026 The Tonight Show audience laughed before Scott was asked about his daughter’s reaction to the lesson. — Leigh Blickley, Entertainment Weekly, 14 Aug. 2026 See All Example Sentences for reaction

Recent Examples of Synonyms for reaction

Noun

This disinformation, often fueled by fossil-fuel interests and amplified by platform algorithms, is described as lethal, drowning out critical public safety information and hindering emergency responses.

— David Vetter, Forbes.com, 19 Aug. 2026
The idea is to train the immune system to recognize and kill those unique cancer markers and then pair that response with Keytruda, which helps the body attack the cancer more effectively.

— Annika Kim Constantino, CNBC, 19 Aug. 2026