hyperactivity
Americannoun
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the condition of being hyperactive.
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An abnormally high level of activity or excitement shown by a person, especially a child, that interferes with the ability to concentrate or interact with others.
Etymology
Origin of hyperactivity
First recorded in 1885–90; hyperactive + -ity
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It is characterized by persistent patterns of inattention, hyperactivity, and impulsivity that can interfere with daily life, including school, work, and relationships.
From Science Daily • Mar. 17, 2026
Children also are on screens more than ever, which is believed to contribute to more anxiety, depression, aggression and hyperactivity.
From Los Angeles Times • Feb. 17, 2026
The company says it is developing traditional Chinese medicine, primarily herbal formulas, to treat autism spectrum disorder and attention-deficit hyperactivity disorder.
From The Wall Street Journal • Jan. 27, 2026
His hyperactivity for much of the day - leaping about his technical area and gesturing madly in the manner of a man at a rave - had gone.
From BBC • Dec. 14, 2025
And the more I began to appreciate what she did for my family, the less her accent and hyperactivity bothered me.
From "Where Things Come Back" by John Corey Whaley
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.