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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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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 blood samples also revealed smaller changes associated with fish and caffeine consumption.

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

A simple question about chilled caffeine has sparked heated debates on couches and online about workplace decorum, highlighting shifting expectations of professionalism.

From The Wall Street Journal ● Sep. 25, 2026

They were laying off sugar or carbs or caffeine or meat or dairy, but maybe a little butter was fine now and then.

From "We Are Okay" by Nina LaCour


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