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
This lull in activity, despite predictions for a hyperactive season, has surprised and puzzled scientists who author seasonal outlooks.
—
Gabe Hauari, USA TODAY, 6 Sep. 2024
The stadium overflows with hyperactive adolescents, some waiting outside hoping to catch a glimpse of the singer emerging from her trailer and others practicing one of Lady Raven’s viral dance routines in the lobby.
—Lovia Gyarkye, The Hollywood Reporter, 1 Aug. 2024
Also, a hyperactive thyroid, anemia such as from iron loss, and caffeine can all elevate your heart rate.
—Trisha Pasricha, Washington Post, 29 July 2024
Off-the-charts ocean heat is one reason a chorus of forecasters are calling for a hyperactive hurricane season.
—Mary Gilbert, CNN, 31 July 2024
See all Example Sentences for hyperactive 
Gabe Hauari, USA TODAY, 6 Sep. 2024
The stadium overflows with hyperactive adolescents, some waiting outside hoping to catch a glimpse of the singer emerging from her trailer and others practicing one of Lady Raven’s viral dance routines in the lobby.
—Lovia Gyarkye, The Hollywood Reporter, 1 Aug. 2024
Also, a hyperactive thyroid, anemia such as from iron loss, and caffeine can all elevate your heart rate.
—Trisha Pasricha, Washington Post, 29 July 2024
Off-the-charts ocean heat is one reason a chorus of forecasters are calling for a hyperactive hurricane season.
—Mary Gilbert, CNN, 31 July 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 16 Sep. 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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