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

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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 In addition, six hyperactive Ravelry users serve as volunteer moderators, making sure that nothing on the main boards infringes on community guidelines. Carrie Battan, The New Yorker, "How Politics Tested Ravelry and the Crafting Community," 22 Mar. 2021 As infection progresses, the primary enemy becomes a hyperactive immune response that wreaks havoc on the body’s organs. Kelly Servick, Science | AAAS, "How do you treat coronavirus? Here are physicians’ best strategies," 16 Mar. 2021 Among the many topics, the WMO hurricane committee will also be discussing the 2020 Atlantic Hurricane Season — known also as the most hyperactive Atlantic season ever recorded. Joe Mario Pedersen, orlandosentinel.com, "Earlier hurricane season? Not this year, says World Meteorological Organization," 15 Mar. 2021 Both boys were hyperactive and required diapers throughout their lives. Michael Finnegan, Los Angeles Times, "Man who drowned his two autistic sons in L.A. harbor gets 212 years in prison," 11 Mar. 2021 At first glance, social media was deliberately designed to trigger the hyperactive hive mind. Nish Acharya, Forbes, "What’s “A World Without Email” For The Entrepreneur And Small Businessperson?," 9 Mar. 2021 Even a TikTok novice (or outright objectionist) can appreciate the warm sunset hues that are provided by the hyperactive app's latest trend: sunset projection lamps. Avery Felman, refinery29.com, "Pistachios, Sunsets, & Sherbert: The Color Trends You’re About To See Everywhere," 8 Mar. 2021 This is, after all, a city with a hyperactive political metabolism, and more than 30 years have passed since an open House seat presented itself. Los Angeles Times, "Column: After Nancy Pelosi, who? San Francisco plays a guessing game," 3 Mar. 2021 The hyperactive 2005 hurricane season had no storms form before June 1, but Hurricane Epsilon formed Nov. 29 and Tropical Storm Zeta formed Dec. 30. Tribune News Service, al, "Hurricane season could start in May this year because storms keep jumping the gun," 28 Feb. 2021

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.

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First Known Use of hyperactive

1867, in the meaning defined at sense 1

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Time Traveler for hyperactive

Time Traveler

The first known use of hyperactive was in 1867

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Statistics for hyperactive

Last Updated

25 Mar 2021

Cite this Entry

“Hyperactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperactive. Accessed 21 Apr. 2021.

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More Definitions for hyperactive



English Language Learners Definition of hyperactive

: extremely active or too active


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, 23 Oct. 1993 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, 23 Nov. 1987 broadly : more active than is usual or desirable



Medical Definition of hyperactive (Entry 2 of 2)

: an individual who is hyperactive

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Comments on hyperactive

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