caffeine

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

NOUN

coffee

Synonyms

STRONGEST

cappuccino espresso

STRONG

brew decaf decoction demitasse ink java mocha mud perk

WEAK

battery acid café café au lait café noir forty weight hot stuff jamocha joe varnish remover

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As a vehicle for jitters, Diet Coke also contains significantly more caffeine than both regular Coca-Cola and Coke Zero.

From The Wall Street Journal • May 20, 2026

Genetics can also play a role in how much coffee people enjoy, influencing both caffeine metabolism and the brain's reward system.

From Science Daily • May 18, 2026

Instead, experts recommend paying attention to overall health, caffeine intake, and blood pressure levels.

From Science Daily • May 18, 2026

Anyone with these conditions should discuss caffeine intake with their doctor.

From Science Daily • May 18, 2026

We all knew the effect caffeine had on Ms. Gruwell.

From "The Freedom Writers Diary" by The Freedom Writers

caffeine

Example Sentences

Related Words