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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
hyperactivity
noun [U] uk   /-ækˈtɪv.ɪ.ti/ us    /-ækˈt̬ɪv.ə.t̬i/
(Definition of hyperactive from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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