hy·​per·​ac·​tive | \ ˌhī-pər-ˈak-tiv How to pronounce hyperactive (audio) \

Definition of hyperactive

1 : affected with or exhibiting hyperactivity broadly : more active than is usual or desirable
2 : intricately or elaborately designed or detailed

Other Words from hyperactive

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Recent Examples on the Web Children may act anxious, hyperactive, withdrawn, or throw tantrums. Laura Newberrystaff Writer, Los Angeles Times, 18 Apr. 2022 Cognitive behavioral therapy seemed to have stronger effects on inattentive symptoms than on hyperactive-impulsive ones, and effects did not depend on whether participants were already taking medication. Laura E. Knouse, The Conversation, 9 May 2022 As a result, kids may exhibit undesired or hyperactive behaviors or irritability. Anchorage Daily News, 14 Apr. 2022 Another idea was to reduce the viral reach of hyperactive (and hyperpartisan) users, and dial up the reach of those in the political middle. Benjamin Wofford, Wired, 10 Mar. 2022 The steering rack's hyperactive response to inputs from the thick M Sport steering wheel requires frequent midcorner corrections, and there's just no sense of what the front wheels are doing. David Beard, Car and Driver, 18 Apr. 2022 The defense is following the lead of the hyperactive Bray, who is a moving target throughout practice. oregonlive, 16 Apr. 2022 Thus in a hyperactive market, a happy consumer can elevate a brand. Goran Paun, Forbes, 12 Apr. 2022 For people like me, that function is a little more hyperactive. Damon Young, Washington Post, 21 Mar. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hyperactive.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of hyperactive

1867, in the meaning defined at sense 1

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The first known use of hyperactive was in 1867

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Last Updated

17 Jun 2022

Cite this Entry

“Hyperactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperactive. Accessed 29 Jun. 2022.

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More Definitions for hyperactive


hy·​per·​ac·​tive | \ ˌhī-pər-ˈak-tiv How to pronounce hyperactive (audio) \

Kids Definition of hyperactive

: extremely or overly active


hy·​per·​ac·​tive | \ ˌhī-pə-ˈrak-tiv How to pronounce hyperactive (audio) \

Medical Definition of hyperactive

 (Entry 1 of 2)

: 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



Medical Definition of hyperactive (Entry 2 of 2)

: an individual who is hyperactive

More from Merriam-Webster on hyperactive

Nglish: Translation of hyperactive for Spanish Speakers

Britannica English: Translation of hyperactive for Arabic Speakers


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