caffeine

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.

"We found that flies consuming caffeine at night were less able to suppress movement, displaying impulsive behaviors such as reckless flying despite these aversive conditions."

From Science Daily • Mar. 31, 2026

Both brands’ 12-ounce cans carry the same 200 milligrams of caffeine, too.

From The Wall Street Journal • Mar. 25, 2026

It was a group powered by caffeine, Johnston said, and their coffee came in handy when they needed a liquid prop to do quick demos with the prototypes to test their absorbency.

From The Wall Street Journal • Mar. 20, 2026

Coffee and tea contain compounds such as polyphenols and caffeine, which are thought to support brain health.

From Science Daily • Mar. 18, 2026

I had been cultivating a headache for the last few hours—the kind of headache that felt like it was going to pop my eyes right out of my skull—and caffeine usually helped.

From "Darius the Great Is Not Okay" by Adib Khorram