caffeinated
adjective
caf·fein·at·ed
ˈka-fə-ˌnā-təd 
-fē-ə-
-fē-ə-
1
: stimulated by or as if by caffeine
caffeinated workers
caffeinated rhythms of electronic music—
Marc Weingarten
Marc Weingarten2
: containing caffeine
caffeinated coffee
Examples of caffeinated in a Sentence
Recent Examples on the Web
The cognitive benefits were most pronounced in those who consumed two to three cups of caffeinated coffee or one to two cups of tea daily.
—Khloe Quill, FOXNews.com, 10 Feb. 2026
The benefits appeared to be most pronounced in people who drank two to three cups of caffeinated coffee a day, the researchers said, or one to two cups of caffeinated tea.
—Kerry Breen, CBS News, 10 Feb. 2026
People who drank two or three cups of caffeinated coffee or tea a day — about 300 milligrams of caffeine — showed the best results.
—David Matthews, New York Daily News, 10 Feb. 2026
Along with caffeinated beverages, there are also homemade pastries, breakfast, and lunch—think avocado toast, chicken salad sandwiches, and Caesar salad.
—Lydia Mansel, Travel + Leisure, 9 Feb. 2026
See All Example Sentences for caffeinated
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Khloe Quill, FOXNews.com, 10 Feb. 2026
The benefits appeared to be most pronounced in people who drank two to three cups of caffeinated coffee a day, the researchers said, or one to two cups of caffeinated tea.
—Kerry Breen, CBS News, 10 Feb. 2026
People who drank two or three cups of caffeinated coffee or tea a day — about 300 milligrams of caffeine — showed the best results.
—David Matthews, New York Daily News, 10 Feb. 2026
Along with caffeinated beverages, there are also homemade pastries, breakfast, and lunch—think avocado toast, chicken salad sandwiches, and Caesar salad.
—Lydia Mansel, Travel + Leisure, 9 Feb. 2026
See All Example Sentences for caffeinated
Cite this Entry
“Caffeinated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/caffeinated. Accessed 15 Feb. 2026.
Copy CitationKids Definition
caffeinated
adjective
caf·fein·at·ed
ˈkaf-ə-ˌnāt-əd
1
: stimulated by or as if by caffeine
2
: containing caffeine
caffeinated coffee
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