cause and effect

noun

plural causes and effects
: the direct relationship between an action or event and its consequence or result
Toys that make noise when interacted with … offer auditory stimulation and teach cause and effect.Maya Polton and Katrina Cossey
"Human nature is to look for cause and effect," says Robert Baloh, professor of neurology and head and neck surgery at UCLA's David Geffen School of Medicine. … "I see this daily when I see patients. They're all sure something they ate or something they did caused their problem and their symptoms."Frank Bures
… focused on observable and verifiable causes and effects in the natural world …Rafi Eis

Examples of cause and effect in a Sentence

Recent Examples on the Web
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.
The findings were presented at the American Heart Association’s Scientific Sessions 2025 but have not yet been peer-reviewed and cannot establish cause and effect. Allison Palmer, Sacbee.com, 16 Apr. 2026 The study has not yet been peer-reviewed and cannot prove cause and effect. Allison Palmer, Fort Worth Star-Telegram, 15 Apr. 2026 The forty-three-year gap between provocation and retaliation is a void between cause and effect into which all temporal logic vanishes. Fintan O’Toole, The New York Review of Books, 9 Apr. 2026 Despite the results, researchers emphasized that the study was observational and cannot prove cause and effect. Deirdre Bardolf, FOXNews.com, 28 Mar. 2026 See All Example Sentences for cause and effect

Word History

First Known Use

1599, in the meaning defined above

Time Traveler
The first known use of cause and effect was in 1599

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Cite this Entry

“Cause and effect.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cause%20and%20effect. Accessed 26 Apr. 2026.

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