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Caffeine Meaning in English

word

/kæˈfin/
ka-FEEN
/kˈæfiːn/
KA-feen

Definition

A natural substance found in coffee, tea, chocolate, and some sodas that makes you feel more awake and alert.

Usage & Nuances

Common in medical, nutritional, and everyday contexts. Typically uncountable. Used in phrases like 'high in caffeine', 'caffeine-free', and 'caffeine content'. Often discussed in relation to energy, alertness, or sleep.

Example Sentences

Coffee contains a lot of caffeine.

basic

Some people are sensitive to caffeine.

basic

Tea also has caffeine in it.

basic

I usually avoid caffeine after 3 p.m. so I can sleep better.

natural

Do you know how much caffeine is in a can of soda?

natural

Sometimes I need a little caffeine boost to get through a busy morning.

natural