adrenaline
noun
Note: Adrenaline is used in both technical and nontechnical contexts. It is commonly used in describing the physiological symptoms (such as increased heart rate and respiration) that occur as part of the body's fight-or-flight response to stress, as when someone is in a dangerous, frightening, or highly competitive situation, as well as the feelings of heightened energy, excitement, strength, and alertness associated with those symptoms. In figurative use, it suggests a drug that provides something with a jolt of useful energy and stimulation.
W. P. KinsellaLance ArmstrongTown and CountryExamples of adrenaline in a Sentence
Fabian Ardaya, New York Times, 2 Nov. 2025
Your skin prickles, adrenaline spikes — and that primal fight-or-flight instinct kicks in.
—Sarah Hutter, CNN Money, 30 Oct. 2025
Fit for those who crave a Halloween adrenaline rush.
—Kurtcia Collazo, IndyStar, 30 Oct. 2025
That's when Lutes said his ''adrenaline started pumping pretty hard.
—Virginia Chamlee, PEOPLE, 29 Oct. 2025
See All Example Sentences for adrenaline
Cite this Entry
“Adrenaline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/adrenaline. Accessed 3 Nov. 2025.
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adrenaline
noun
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adrenaline
noun
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