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
Synonyms
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
Those are ominous signs of what weather experts see as danger ahead in what is expected to be a hyperactive season for major storms.
—
Susan Miller, USA TODAY, 2 July 2024
For this year, forecasters have been consistently predicting a hyperactive season due to the combination of roasting sea surface temperatures and the onset of La Niña during the critical months of August, September, and October.
—Eric Berger, Ars Technica, 2 July 2024
Systems forming this early in the summer in this part of the Atlantic is a sign of the hyperactive hurricane season to come, according to research from Phil Klotzbach, a hurricane expert and research scientist at Colorado State University.
—Elizabeth Wolfe, CNN, 1 July 2024
In August 2022, Zak Toscani was in the middle of performing a stand-up show in a fan’s Boulder, Colorado, backyard when, suddenly, an audience member’s hyperactive dog began running laps around the house like it had been possessed.
—Hershal Pandya, Vulture, 16 May 2024
See all Example Sentences for hyperactive 
Susan Miller, USA TODAY, 2 July 2024
For this year, forecasters have been consistently predicting a hyperactive season due to the combination of roasting sea surface temperatures and the onset of La Niña during the critical months of August, September, and October.
—Eric Berger, Ars Technica, 2 July 2024
Systems forming this early in the summer in this part of the Atlantic is a sign of the hyperactive hurricane season to come, according to research from Phil Klotzbach, a hurricane expert and research scientist at Colorado State University.
—Elizabeth Wolfe, CNN, 1 July 2024
In August 2022, Zak Toscani was in the middle of performing a stand-up show in a fan’s Boulder, Colorado, backyard when, suddenly, an audience member’s hyperactive dog began running laps around the house like it had been possessed.
—Hershal Pandya, Vulture, 16 May 2024
See all Example Sentences for hyperactive
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hyperactive.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near hyperactive
Cite this Entry
“Hyperactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperactive. Accessed 7 Jul. 2024.
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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