# hyperactive

/ˌhaɪpɝˈæktɪv/ (US) · /hˌaɪpəɹˈæktɪv/ (UK) · CEFR B2 · Adjective

Source: https://englishreference.com/word/hyperactive
Updated: 2026-05-28

## Definition

describing someone who is extremely active and has a lot of energy. It is often used to talk about children who find it hard to sit still or focus.

For teachers: characterised by an abnormally high level of physical or mental activity. Often used to describe children with attention deficit hyperactivity disorder (ADHD) or to describe a person's current state of restlessness.

## Examples

- The hyperactive child could not sit still during the movie.
- After drinking three cups of coffee, he became hyperactive and started pacing the room.
- The hyperactive economy of the late nineties saw a massive influx of venture capital into the tech sector, eventually leading to a speculative bubble.

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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.