hyperactive

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˌhaɪpərˈæktɪv/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˌhaɪpərˈæktɪv/ ,USA pronunciation: respelling(hī′pər ak′tiv)


WordReference Random House Learner's Dictionary of American English © 2026
hy•per•ac•tive /ˌhaɪpərˈæktɪv/USA pronunciation   adj. 
  1. unusually or abnormally active.
hy•per•ac•tiv•i•ty /ˌhaɪpərækˈtɪvɪti/USA pronunciation  n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2026
hy•per•ac•tive  (hī′pər ak′tiv),USA pronunciation adj. 
  1. unusually or abnormally active:a company's hyperactive growth; the child's hyperactive imagination.
  2. Medicine, Pathology, Psychiatry(of children) displaying exaggerated physical activity sometimes associated with neurologic or psychologic causes.
  3. hyperkinetic.
  • 1865–70; hyper- + active
hy•per•ac•tion  (hī′pər ak′shən),USA pronunciation n.  hy′per•ac′tive•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::
hyperactive /ˌhaɪpərˈæktɪv/ adj
  1. abnormally active
ˌhyperˈaction n ˌhyperacˈtivity n
'hyperactive' also found in these entries (note: many are not synonyms or translations):
hyper - hyperactivity

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