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Definitions

caffeine

[ka-feen, kaf-een, kaf-ee-in] / kæˈfin, ˈkæf in, ˈkæf i ɪn /


Example Sentences

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She doesn’t drink caffeine or have a full breakfast during the week.

From The Wall Street Journal ● Oct. 19, 2026

If the measurement is higher or lower than “ideal,” the app provides a short blurb about what that could mean, like I could have slept poorly or had too much caffeine.

From Slate ● Oct. 9, 2026

The findings suggest that some of coffee's effects on mood may not depend entirely on caffeine.

From Science Daily ● Sep. 28, 2026

But Tarasenko, 26, is unable to feed his caffeine habit, as his favourite fizzy drink is no longer in stock at his local supermarket.

From Barron's ● Sep. 27, 2026

“Run along now and have your cup of caffeine solution, dear,” she said to the other nurse.

From "Brave New World" by Aldous Huxley


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