Usually means: Excessively active beyond normal limits.
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We found 18 dictionaries that define the word overactive:

General (16 matching dictionaries)
  1. overactive: Longman Dictionary of Contemporary English
  2. overactive: Merriam-Webster
  3. overactive: Oxford Learner's Dictionaries
  4. overactive: American Heritage Dictionary of the English Language
  5. overactive: Collins English Dictionary
  6. overactive: Vocabulary.com
  7. Overactive, overactive: Wordnik
  8. overactive: Wiktionary
  9. overactive: Infoplease Dictionary
  10. overactive: Dictionary.com
  11. overactive: Rhymezone
  12. overactive: FreeDictionary.org
  13. overactive: Mnemonic Dictionary
  14. overactive: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. overactive: Encyclopedia

Medicine (1 matching dictionary)
  1. overactive: Merriam-Webster Medical Dictionary

(Note: See overactivity as well.)

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Definitions from Wiktionary (
)
American English Definition British English Definition
▸ adjective:  Excessively active.

Similar:
hyperactive, active, overexcitable, overresponsive, overexcited, overvigorous, overexuberant, overnervous, overlively, overaggressive, more...

Opposite:
underactive, sluggish, inactive, lethargic

Types:
fidgety, hyperactive, restless, impulsive, more...

Phrases:
overactive thyroid, overactive bladder, OverActive Media, overactive imagination, more...



▸ Words similar to overactive

▸ Usage examples for overactive

▸ Idioms related to overactive

▸ Wikipedia articles (New!)

▸ Popular nouns described by overactive

▸ Words that often appear near overactive

▸ Rhymes of overactive

▸ Invented words related to overactive

Similar:
hyperactive, active, overexcitable, overresponsive, overexcited, overvigorous, overexuberant, overnervous, overlively, overaggressive, more...

Opposite:
underactive, sluggish, inactive, lethargic

Types:
fidgety, hyperactive, restless, impulsive, more...

Phrases:
overactive thyroid, overactive bladder, OverActive Media, overactive imagination, more...



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