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
The exposure made generations of Americans more depressed, anxious, inattentive or hyperactive, the study says.
—
Elizabeth Chuck, NBC News, 4 Dec. 2024
Certain moments of unabashed emotion where the music swells feel attuned to the vivid realism of cinematographer Santiago Gonzalez’s hyperactive camera.
—Carlos Aguilar, Variety, 20 Dec. 2024
The most plausible answer, as proposed by the new study, is that black holes can experience bursts of hyperactive growth, followed by long periods of dormancy.
—Jack Knudson, Discover Magazine, 18 Dec. 2024
The Golden Boy 5 Tips for Keeping Your House Clean With Pets
Indeed, keeping the house clean and tidy as a pet owner is a major task by itself, never mind with a hyperactive puppy around.
—Joseph Epstein, Newsweek, 11 Dec. 2024
See all Example Sentences for hyperactive 
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Elizabeth Chuck, NBC News, 4 Dec. 2024
Certain moments of unabashed emotion where the music swells feel attuned to the vivid realism of cinematographer Santiago Gonzalez’s hyperactive camera.
—Carlos Aguilar, Variety, 20 Dec. 2024
The most plausible answer, as proposed by the new study, is that black holes can experience bursts of hyperactive growth, followed by long periods of dormancy.
—Jack Knudson, Discover Magazine, 18 Dec. 2024
The Golden Boy 5 Tips for Keeping Your House Clean With Pets
Indeed, keeping the house clean and tidy as a pet owner is a major task by itself, never mind with a hyperactive puppy around.
—Joseph Epstein, Newsweek, 11 Dec. 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 29 Jan. 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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