Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “hyperactive”

hyperactive

adjective uk   /ˌhaɪ.pər'æk.tɪv/ us    /-pɚ-/
Someone who is hyperactive has more energy than is normal, gets excited easily, and cannot stay still or think about work: Hyperactive children often have poor concentration and require very little sleep.
See also
Becoming too excited and easily upset
hyperactivity
noun [U] uk   /-ækˈtɪv.ɪ.ti/ us    /-ækˈt̬ɪv.ə.t̬i/
Becoming too excited and easily upset
(Definition of hyperactive from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of hyperactive?
Add Cambridge dictionaries to your browser to your website

Definitions of “hyperactive” in other dictionaries

Word of the Day

beer mat

a small piece of cardboard that you put under a glass to protect a table surface in a pub or bar

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More