hyperactive

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adjective hy·per·ac·tive \ ˌhī-pər-ˈak-tiv \

Definition of hyperactive

1 :affected with or exhibiting hyperactivity; broadly :more active than is usual or desirable
2 :intricately or elaborately designed or detailed

hyperactive

noun

Examples of hyperactive in a Sentence

  1. the skyrocketing price of oil resulted in a wildly fluctuating, hyperactive stock market

  2. hyperactive children who are in dire need of a guardian with a firm hand

Recent Examples of hyperactive from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hyperactive.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of hyperactive

1867


HYPERACTIVE Defined for English Language Learners

hyperactive

play
adjective

Definition of hyperactive for English Language Learners

  • : extremely active or too active


HYPERACTIVE Defined for Kids

hyperactive

play
adjective hy·per·ac·tive \ ˌhī-pər-ˈak-tiv \

Definition of hyperactive for Students

:extremely or overly active

Medical Dictionary

1

hyperactive

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adjective hy·per·ac·tive \ ˌhī-pə-ˈrak-tiv \

medical Definition of hyperactive

:affected with or exhibiting hyperactivity
  • Scientists suspect in certain genetically susceptible people, the immune cells remain hyperactive long after the infectious agent has been cleared from the body.
  • —Kathy FackelmannScience News23 Oct. 1993
  • A growing number of parents suspect that the powerful stimulant Ritalin—long prescribed for its paradoxically tranquilizing effect on hyperactive children—has become a convenience for teachers seeking quiet classrooms …
  • —David Gates. Newsweek23 Nov. 1987
; broadly :more active than is usual or desirable

2

hyperactive

noun

medical Definition of hyperactive

:an individual who is hyperactive


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