hyperactive
adjective
hy·per·ac·tive
ˌhī-pər-ˈak-tiv 
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
Girls may, for example, struggle with time management, daydreaming or being a chatterbox and are more likely to be diagnosed with the primarily inattentive type of ADHD over the hyperactive type.
—
Daliah Singer, Smithsonian Magazine, 9 July 2025
The 2025 hurricane season is underway and will last 183 days, and all signs point to an intense and active period driven by record warm Atlantic Ocean Temperature and the transition to neutral El Niño–Southern Oscillation conditions, which together set the stage for a hyperactive season.
—Dianne Plummer, Forbes.com, 6 June 2025
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
See All Example Sentences for hyperactive
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Daliah Singer, Smithsonian Magazine, 9 July 2025
The 2025 hurricane season is underway and will last 183 days, and all signs point to an intense and active period driven by record warm Atlantic Ocean Temperature and the transition to neutral El Niño–Southern Oscillation conditions, which together set the stage for a hyperactive season.
—Dianne Plummer, Forbes.com, 6 June 2025
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
See All Example Sentences for hyperactive
Cite this Entry
“Hyperactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperactive. Accessed 22 Jul. 2025.
Copy CitationKids Definition
hyperactive
adjective
hy·per·ac·tive
ˌhī-pər-ˈak-tiv
: very active especially to an abnormal amount
hyperactivity
noun
-ak-ˈtiv-ət-ē
Medical Definition
hyperactive
1 of 2 adjective
hy·per·ac·tive
ˌhī-pə-ˈrak-tiv
: 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
Kathy Fackelmann, Science NewsA 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
David Gates. Newsweek
broadly
: more active than is usual or desirable
hyperactive
2 of 2 noun
: an individual who is hyperactive
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