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
Soon enough, the school's overrun with hyperactive kiddos bouncing off the walls, and the teachers have to devise a plan to burn off this sugar buzz while tracking down the sticky-fingered culprit running loose in their halls.
—
Nicole Briese, People.com, 22 Oct. 2024
This is particularly true of females with the disorder, whose behavior as children tends to be more inattentive than hyperactive like the stereotypical boy with ADHD.
—Lydia Denworth, Scientific American, 15 Oct. 2024
But this season – which is expected to be hyperactive – got off to a historic start when Beryl exploded into a ferocious Category 5 hurricane in early July.
—Mary Gilbert, CNN, 26 July 2024
The year started with dire predictions of a hyperactive season, quickly followed by the explosive and record-breaking landfall of Beryl in early July.
—Doyle Rice, USA TODAY, 8 Oct. 2024
See all Example Sentences for hyperactive 
These examples are automatically compiled from online sources to
illustrate current usage. Opinions expressed in the examples do not represent those of
Merriam-Webster or its editors.
Send us feedback
about these examples.
Nicole Briese, People.com, 22 Oct. 2024
This is particularly true of females with the disorder, whose behavior as children tends to be more inattentive than hyperactive like the stereotypical boy with ADHD.
—Lydia Denworth, Scientific American, 15 Oct. 2024
But this season – which is expected to be hyperactive – got off to a historic start when Beryl exploded into a ferocious Category 5 hurricane in early July.
—Mary Gilbert, CNN, 26 July 2024
The year started with dire predictions of a hyperactive season, quickly followed by the explosive and record-breaking landfall of Beryl in early July.
—Doyle Rice, USA TODAY, 8 Oct. 2024
See all Example Sentences for hyperactive
Dictionary Entries Near hyperactive
Cite this Entry
“Hyperactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperactive. Accessed 16 Nov. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share