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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 functional food trend is pushing caffeine where protein went before it, into a range of packaged foods and drinks from beef jerky to water.

From The Wall Street Journal ● Oct. 7, 2026

Participants completed psychological assessments and kept records of caffeine intake and diet.

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

That was another one of the categories we’d determined: people who drank plain coffee and people who drank gussied-up caffeine drinks like the mint-chip lattes Kim was so fond of.

From "If I Stay" by Gayle Forman


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