Definition

Noun: A behavioral condition marked by abnormally high levels of activity, restlessness, and difficulty focusing or remaining still, often associated with attention deficit hyperactivity disorder (ADHD).

Usage and Examples

The noun "hyperactivity" describes a state of being, not an action. It is typically used in medical, psychological, or educational contexts.

• The child's hyperactivity in the classroom made it difficult for him to complete his work.
• One of the core symptoms of ADHD is hyperactivity.
• The doctor noted that the hyperactivity seemed to decrease after dietary changes.

Advanced Usage

• Clinical/Diagnostic Context: Used to name a specific symptom or diagnostic criterion.
  • The assessment measures levels of inattention and hyperactivity.
• Figurative Use: Can be applied metaphorically to non-human subjects to describe excessive, frantic activity.
  • The hyperactivity of the stock market made investors nervous.

Variants and Related Words

• Hyperactive (adjective): Describing a person or behavior showing hyperactivity.
  • The hyperactive puppy ran circles around the yard.
• Attention deficit hyperactivity disorder (ADHD) (noun): The common neurodevelopmental disorder with which hyperactivity is often associated.

Synonyms

• Restlessness
• Overactivity
• Fidgetiness

Antonyms

• Lethargy
• Inactivity
• Calmness

Notes on Meaning

"Hyperactivity" specifically refers to excessive and often impulsive motor activity. It is more than just high energy; it implies a level of activity that is disruptive or inappropriate for the setting or the person's age. It is a key component, but not the sole component, of ADHD.

Noun

1. a condition characterized by excessive restlessness and movement