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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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n. - A condition characterized by excessive restlessness and movement.

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Usage examples (37)
  • NED needs his Ritalin — his hyperactivity is out of control.
  • The extremes of these changes in levels of activity are termed hyperactivity and hypoactivity.
  • I realize now that the hyperactivity was her response to the overwhleming change that had been foisted on her.
  • I dont know if there is any correlation but my so called hyperactivity coincided with the period when those mercury filling were installed.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.