hyperactivity

/ˌhaɪpərækˈtɪvəti/
noun
  1. A condition of being unusually or excessively active, especially in children, often involving difficulty concentrating or sitting still.
    • Her hyperactivity made it hard for her to focus during long meetings.
    • The teacher noticed the student's hyperactivity and recommended a check-up with a doctor.
    • Some people think sugar causes hyperactivity, but research doesn't fully support that.
  2. Excessive or abnormally high activity in a system, organ, or process.
    • Hyperactivity of the thyroid gland can lead to weight loss and a rapid heartbeat.
    • Scientists studied the hyperactivity of certain brain regions in people with anxiety.
    • The stock market showed signs of hyperactivity, with prices changing every few minutes.
Antonyms
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