Simple Definition of hyperactive

from our Learner's Dictionary

hyperactive

adjective

ˌhaɪpɚˈæktɪv

: extremely active or too active

hyperactive children

All of these wild characters are products of the author's hyperactive [=overactive] imagination.

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“Hyperactive.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/hyperactive. Accessed 20 Jun. 2026.

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