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
His family, speaking in court, described him as a hyperactive kid who was placed in foster homes twice.
—
Amanda Lee Myers, USA TODAY, 5 Mar. 2025
Myers looks the part and played Musk as a giggly, hopping, hyperactive South African toddler and/or glitchy robot.
—Omar L. Gallaga, Los Angeles Times, 2 Mar. 2025
This resulting vehicle looks like a supercar as seen through the eyes of a hyperactive kindergartner especially its nightmarish rear end.
—Bryan Hood, Robb Report, 24 Feb. 2025
The results, published this week in the Journal of Child Psychology and Psychiatry, says that lead exposure from car exhaust during children’s early development has made generations of Americans more depressed, anxious, inattentive and hyperactive.
—Elizabeth Robinson, NBC News, 5 Dec. 2024
See All Example Sentences for hyperactive
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Amanda Lee Myers, USA TODAY, 5 Mar. 2025
Myers looks the part and played Musk as a giggly, hopping, hyperactive South African toddler and/or glitchy robot.
—Omar L. Gallaga, Los Angeles Times, 2 Mar. 2025
This resulting vehicle looks like a supercar as seen through the eyes of a hyperactive kindergartner especially its nightmarish rear end.
—Bryan Hood, Robb Report, 24 Feb. 2025
The results, published this week in the Journal of Child Psychology and Psychiatry, says that lead exposure from car exhaust during children’s early development has made generations of Americans more depressed, anxious, inattentive and hyperactive.
—Elizabeth Robinson, NBC News, 5 Dec. 2024
See All Example Sentences for hyperactive
Cite this Entry
“Hyperactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperactive. Accessed 13 Mar. 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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