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
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The evaluation covered March 2023 through December 2025 and drew on administrative data and interviews with participants and staff, though researchers said the findings show associations and do not establish cause and effect. City News Service, Daily News, 2 May 2026 These patterns were consistent across populations and may represent early biological changes, raising the possibility that gut microbiome testing could one day help identify risk earlier, though the research is still observational and does not prove cause and effect. Samantha Agate, Fort Worth Star-Telegram, 1 May 2026 However, the findings show an association—not cause and effect. Zoe Cunniffe, Health, 30 Apr. 2026 The study could only show an association, not a direct cause and effect. Sandee Lamotte, CNN Money, 29 Apr. 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 8 May. 2026.

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