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Etymology

    From hyper- + activity.

    Pronunciation

    Noun

    hyperactivity (usually uncountable, plural hyperactivities)

    1. The quality of being hyperactive; excessive and pathological movement and restlessness.
      • 2025 January 23, Kristen Rogers, “People with ADHD have shorter life expectancy and higher risk of mental health issues, study finds”, in CNN[1]:
        Having attention deficit hyperactivity disorder, or ADHD, is associated with a shorter life expectancy and a greater risk of mental health issues, according to a new study of more than 30,000 people with the disorder in the United Kingdom.

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