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

Relevance

Antonyms & Near Antonyms

Example Sentences

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.

Recent Examples of reaction Previous experiments measuring solar neutrinos were only able to see electron neutrinos, which are the only type produced in fusion reactions in the Sun’s core. — Doug Cowen, The Conversation, 8 Oct. 2026 Virgo August 23 – September 22 The Moon is in your sign today, bringing your attention back to your own needs, reactions, and priorities. — Tarot.com, Chicago Tribune, 8 Oct. 2026 First reactions finally in for Other Mommy, and some are pretty scary for Universal. — James Hibberd, HollywoodReporter, 8 Oct. 2026 The operation has not been publicly announced, but was met with fiery reaction from Newsom. — Darrell Smith, Sacbee.com, 8 Oct. 2026 See All Example Sentences for reaction

Recent Examples of Synonyms for reaction

Noun

In the early 2000s, the city authorities stopped the culling of baboon troops in response to public pressure, but that has since swollen the population by a third – to around 500.

— Will Barker, TheWeek, 5 Oct. 2026
Yet the reforms are a necessary response to Biden-era efforts to undermine the marketplace by limiting options for American consumers.

— Arkansas Online, Arkansas Online, 5 Oct. 2026