hyperactivity

American  

[hahy-per-ak-tiv-i-tee] / ˌhaɪ pər ækˈtɪv ɪ ti /

noun

1. the condition of being hyperactive.

2. hyperkinesia.

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hyperactivity Scientific  

/ hī′pər-ăk-tĭv′ĭ-tē /

1. 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.

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Etymology

Origin of hyperactivity

First recorded in 1885–90; hyperactive + -ity

Example Sentences

See Examples For:

hyperactivity

According to the researchers, the hippocampal hyperactivity associated with APOE4 was entirely driven by APOE4 produced within neurons themselves.

From Science Daily ● Aug. 23, 2026

Alkermes’ drug is already in early stage trials for fatigue tied to multiple sclerosis and Parkinson’s disease, and for attention-deficit hyperactivity disorder.

From The Wall Street Journal ● Aug. 6, 2026

There might be coaches who could help with issues like attention deficit hyperactivity disorder or therapists she could talk to about her mental health.

From MarketWatch ● Jul. 29, 2026

Her latest album, "ADHDara," is inspired by her "hyperactivity".

From Barron's ● May 17, 2026

These so-called comorbidities—meaning the conditions co-occur with Internet addiction—include “attention-deficit hyperactivity, mood, anxiety and personality disorders.”

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel