1
: stimulated by or as if by caffeine
caffeinated workers
caffeinated rhythms of electronic musicMarc Weingarten
2
: containing caffeine
caffeinated coffee

caffeinated

2 of 2

past tense and past participle of caffeinate

Examples of caffeinated in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
Drinking up to five cups of caffeinated coffee a day, its authors wrote, has been linked to a lower risk of heart attack, diabetes, stroke and irregular heartbeat. Mary Randolph, Scientific American, 11 Aug. 2026 The Hibiscus Sol-Mate ($7) was a blend of (slightly caffeinated) yerba mate, hibiscus, rose, peppermint and lemongrass, with a fresh lemon slice and a hint of agave. Deborah Vankin, Los Angeles Times, 11 Aug. 2026 Once re-caffeinated, walk through pretty St Luke’s Square to Trg od Drva, or Wood Square. Jonathan Wiggin, Condé Nast Traveler, 6 Aug. 2026 Drinking five cups of caffeinated coffee a day has recently made headlines for its potential health benefits. Morgan Pearson, Verywell Health, 2 Aug. 2026 See All Example Sentences for caffeinated

Word History

First Known Use

Adjective

circa 1896, in the meaning defined at sense 2

Time Traveler
The first known use of caffeinated was circa 1896

Browse Nearby Words

Cite this Entry

“Caffeinated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/caffeinated. Accessed 28 Aug. 2026.

Kids Definition

caffeinated

adjective
1
: stimulated by or as if by caffeine
2
: containing caffeine
caffeinated coffee
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster