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Definitions

hyperactivity

[hahy-per-ak-tiv-i-tee] / ˌhaɪ pər ækˈtɪv ɪ ti /
NOUN
attention deficit disorder
Synonyms


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.

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

Synthetic dyes are often added to make foods look more appealing, especially products aimed at children, but a growing body of evidence indicates they may contribute to behavioral problems such as hyperactivity and inattention.¹

From Science Daily • Nov. 7, 2025

When Joani Reisen goes without her medicine for attention-deficit hyperactivity disorder, she says it feels like “squirrels running everywhere” in her mind.

From MarketWatch • Oct. 21, 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