Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

overreact

play
intransitive verb over·re·act \ˌō-və(r)-rē-ˈakt\

Medical Definition of overreact

  1. :  to react excessively or too strongly <the body's immune system overreacts to the endotoxin—Tina Adler>

overreaction \-ˈak-shən\play noun



Learn More about overreact


Seen and Heard

What made you want to look up overreact? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

tending to dismiss important matters

Get Word of the Day daily email!