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

ADHD, Attention Deficit Hyperactivity Disorder, is a neuro-developmental condition which often causes impulsiveness and inattention.

From BBC • Dec. 22, 2025

You might think that someone who makes a keypunching error ought to be given the opportunity to undo the mistake, especially if they have been diagnosed with Attention Deficit Hyperactivity Disorder or ADHD.

From Salon • Oct. 24, 2020

Manfred also said Rose has never “seriously sought treatment” for Attention Deficit Hyperactivity Disorder and Oppositional Defiant Behavior, conditions he said in his 2004 book had afflicted him.

From Washington Times • Dec. 14, 2015

Both those drugs are used to treat Attention Deficit Hyperactivity Disorder.

From Reuters • Dec. 16, 2014

Attention Deficit Hyperactivity Disorder, or ADHD, is a controversial subject among many parents, educators and medical professionals.

From Time • Nov. 20, 2014