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
Moreover, these hyperactive behaviors became even more intense as the study progressed, showing a lasting shift in how the fish navigated their environment. —
Mrigakshi Dixit, Interesting Engineering, 20 Apr. 2026 Check out the full list of stops, which comes with support from the similarly hyperactive Dazegxd, below. —Jazz Monroe, Pitchfork, 20 Apr. 2026 In fact, a hyperactive locus coeruleus fuels some symptoms of post-traumatic stress disorder. —Elizabeth Riley, The Conversation, 26 Mar. 2026 Accuweather expects a near-normal hurricane season, but the Atlantic basin has experienced multiple hyperactive seasons in recent years, driven in part by shifting global weather patterns that influence storm activity. —Newsroom Meteorologist, Houston Chronicle, 25 Mar. 2026 See All Example Sentences for hyperactive
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.
Mrigakshi Dixit, Interesting Engineering, 20 Apr. 2026 Check out the full list of stops, which comes with support from the similarly hyperactive Dazegxd, below. —Jazz Monroe, Pitchfork, 20 Apr. 2026 In fact, a hyperactive locus coeruleus fuels some symptoms of post-traumatic stress disorder. —Elizabeth Riley, The Conversation, 26 Mar. 2026 Accuweather expects a near-normal hurricane season, but the Atlantic basin has experienced multiple hyperactive seasons in recent years, driven in part by shifting global weather patterns that influence storm activity. —Newsroom Meteorologist, Houston Chronicle, 25 Mar. 2026 See All Example Sentences for hyperactive
Cite this Entry
“Hyperactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.grautoblog.com/dictionary/hyperactive. Accessed 25 Apr. 2026.
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 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
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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