Usually means: Excessively responsive to external stimuli.
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We found 7 dictionaries that define the word hyperreactive:

General (4 matching dictionaries)
  1. hyperreactive: Merriam-Webster
  2. hyperreactive: Collins English Dictionary
  3. hyperreactive: Wiktionary
  4. hyperreactive: Dictionary.com

Medicine (3 matching dictionaries)
  1. hyperreactive: Merriam-Webster Medical Dictionary
  2. Dorland's Illustrated Medical Dictionary (No longer online)
  3. hyperreactive: Medical dictionary

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Definitions from Wiktionary (hyperreactive)

▸ adjective:  Showing a much greater than normal response to a stimulus

Similar:
hyperresponsive, overresponsive, overexcitable, overreactive, hyperactive, hyperexcitable, hyperactivated, overactive, over-reactive, overexcited, more...

Opposite:
hypoactive, underreactive, unresponsive

Phrases:
hyperreactive malarious splenomegaly, more...

▸ Words similar to hyperreactive

▸ Usage examples for hyperreactive

▸ Idioms related to hyperreactive

▸ Wikipedia articles (New!)

▸ Popular nouns described by hyperreactive

▸ Words that often appear near hyperreactive

▸ Rhymes of hyperreactive

▸ Invented words related to hyperreactive

Similar:
hyperresponsive, overresponsive, overexcitable, overreactive, hyperactive, hyperexcitable, hyperactivated, overactive, over-reactive, overexcited, more...

Opposite:
hypoactive, underreactive, unresponsive

Phrases:
hyperreactive malarious splenomegaly, more...



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