# hyperactivity

/ˌhaɪpɝækˈtɪvɪti/ (US) · /hˌaɪpəɹɐktˈɪvɪti/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/hyperactivity
Updated: 2026-05-20

## Definition

a state of being very active, energetic, or restless. It often describes a child who has a lot of energy and cannot sit still for long.

For teachers: a state of excessive physical or mental activity, often characterized by restlessness and an inability to remain seated. Frequently used in clinical contexts to describe a neurodevelopmental condition.

## Examples

- The doctor checked for signs of hyperactivity in the child.
- The teacher noticed that the student's hyperactivity made it difficult for him to focus during quiet reading time.
- While some children exhibit hyperactivity as a natural part of their development, persistent and severe symptoms may indicate a need for professional intervention to manage attention and behavior.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.