1. excessive or abnormally high levels of activity or movement
Usage: often used in medical or psychological contexts

Examples

• The child’s overactivity made it difficult for him to sit still in class.
• Doctors noted signs of overactivity in the patient’s nervous system.
• The medication helped reduce her overactivity and improve concentration.
• Overactivity of the thyroid gland can cause various health problems.
• The teacher developed strategies to manage students with overactivity disorders.
• His overactivity was most noticeable during stressful situations.