hyperactivity

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˌhaɪpərækˈtɪvɪti/

US:USA pronunciation: IPAUSA pronunciation: IPA/ˌhaɪpərækˈtɪvɪti/

US:USA pronunciation: respellingUSA pronunciation: respelling(hī′pər ak tiv′i tē)



WordReference Random House Unabridged Dictionary of American English © 2025
hy•per•ac•tiv•i•ty  (hī′pər ak tiv′i tē),USA pronunciation n. 
  1. Psychiatrythe condition of being hyperactive.
  2. Psychiatry, Pathologyhyperkinesia.
  • hyperactive + -ity 1885–90

WordReference Random House Learner's Dictionary of American English © 2025
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 © 2025
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. 

'hyperactivity' also found in these entries (note: many are not synonyms or translations):
ADHD - attention deficit disorder - attention deficit hyperactivity disorder

Forum discussions with the word(s) "hyperactivity" in the title:


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