hyperactive

adjective

hy·​per·​ac·​tive ˌhī-pər-ˈak-tiv How to pronounce hyperactive (audio)
1
: affected with or exhibiting hyperactivity
broadly : more active than is usual or desirable
2
: intricately or elaborately designed or detailed
hyperactive noun

Examples of hyperactive in a Sentence

the skyrocketing price of oil resulted in a wildly fluctuating, hyperactive stock market hyperactive children who are in dire need of a guardian with a firm hand
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.
Filming wrapped in February, and a release date has yet to be announced. Transforming a wildly popular, hyperactive manga with more than 1,100 episodes into a live-action series is no easy feat, but Netflix's reimagining of One Piece pleased noobs and fans alike. Randall Colburn, EW.com, 30 May 2025 The four-day event was designed as a boot camp for content creators who hoped to someday reign over their own empire of influence, having grown up watching how the hyperactive, over-the-top antics of YouTubers and Twitch streamers turned them into multimillionaire moguls. Rebecca Jennings, Vulture, 30 May 2025 The mothers have one mutation that makes the neuron hyperactive and another that mutes it. Rivka Galchen, New Yorker, 26 May 2025 Attention-Deficit/Hyperactivity Disorder has long been seen as a childhood condition, typically associated with hyperactive boys disrupting classrooms. Cheryl Robinson, Forbes.com, 6 June 2025 See All Example Sentences for hyperactive

Word History

First Known Use

1867, in the meaning defined at sense 1

Time Traveler
The first known use of hyperactive was in 1867

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Cite this Entry

“Hyperactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperactive. Accessed 30 Jun. 2025.

Kids Definition

hyperactive

adjective
hy·​per·​ac·​tive ˌhī-pər-ˈak-tiv How to pronounce hyperactive (audio)
: very active especially to an abnormal amount
hyperactivity
-ak-ˈtiv-ət-ē
noun

Medical Definition

hyperactive

1 of 2 adjective
hy·​per·​ac·​tive ˌhī-pə-ˈrak-tiv How to pronounce hyperactive (audio)
: affected with or exhibiting hyperactivity
Scientists suspect in certain genetically susceptible people, the immune cells remain hyperactive long after the infectious agent has been cleared from the body.Kathy Fackelmann, Science News
A growing number of parents suspect that the powerful stimulant Ritalin—long prescribed for its paradoxically tranquilizing effect on hyperactive children—has become a convenience for teachers seeking quiet classrooms …David Gates. Newsweek
broadly : more active than is usual or desirable

hyperactive

2 of 2 noun
: an individual who is hyperactive

More from Merriam-Webster on hyperactive

Last Updated: - Updated example sentences
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