[ hahy-per-ak-tiv-i-tee ]
See synonyms for hyperactivity on Thesaurus.com
  1. the condition of being hyperactive.

Origin of hyperactivity

First recorded in 1885–90; hyperactive + -ity

Words Nearby hyperactivity

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use hyperactivity in a sentence

Scientific definitions for hyperactivity


[ hī′pər-ăk-tĭvĭ-tē ]

  1. An abnormally high level of activity or excitement shown by a person, especially a child, that interferes with the ability to concentrate or interact with others.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.