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⇱ react - WordReference.com Dictionary of English

react

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UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/riˈækt/US:USA pronunciation: IPAUSA pronunciation: IPA/riˈækt/


WordReference Random House Learner's Dictionary of American English © 2026
re•act /riˈækt/USA pronunciation   v. [no object]
  1. to respond to a stimulus:reacted to the dust by sneezing.
  2. to act in a reverse direction or manner, esp. so as to return to a condition that existed earlier in time.
  3. to act in opposition:taxpayers reacting against corruption with their votes.
  4. Chemistryto undergo a chemical change:The iodine and the unknown chemical reacted by giving off smoke.
See -act-.
Collins Concise English Dictionary © HarperCollins Publishers::
react /rɪˈækt/ vb
  1. (intr; followed by to, upon, etc) (of a person or thing) to act in response to another person, a stimulus, etc, or (of two people or things) to act together in a certain way
  2. (intransitive) followed by against: to act in an opposing or contrary manner
  3. (intransitive) to exert an equal force in the opposite direction to an acting force
  4. to undergo or cause to undergo a chemical reaction
Etymology: 17th Century: from Late Latin reagere, from re- + Latin agere to drive, do
WordReference Random House Unabridged Dictionary of American English © 2026
re-act  (rē akt′),USA pronunciation v.t. 
  1. to act or perform again.
  • re- + act 1650–60

re•act  (rē akt′),USA pronunciation v.i. 
  1. to act in response to an agent or influence:How did the audience react to the speech?
  2. to act reciprocally upon each other, as two things.
  3. to act in a reverse direction or manner, esp. so as to return to a prior condition.
  4. to act in opposition, as against some force.
  5. to respond to a stimulus in a particular manner:reacting to a shock by jumping; to react to the word "coward'' with anger.
  6. Chemistryto undergo a chemical reaction.
  • re- + act, probably modeled on Medieval Latin reagere 1635–45

Collins Concise English Dictionary © HarperCollins Publishers::
re-act /riːˈækt/ vb
  1. (transitive) to act or perform again
'react' also found in these entries (note: many are not synonyms or translations):
Collocations: react [angrily, slowly, positively], react to the [news, changes, suggestion], react to her [news], more...

🗣️Forum discussions with the word(s) "react" in the title:

Act and not react
as something to react against
Behave [Possible synonyms: act; react?]
courage to act instead of react
difference between respond & react
discussing how countries would react
Don't live to react to the distorted sense of fear.
Fight back = React?
have criticized Apple as slow to react
How did (person) react?
How did he react/response
How do you react when you are (being) shouted at?
How to react to him/his getting a divorce
How to respond/react to "Down the hatch" and "Bottoms up"
How would you react if I told you there was/is something
I thought they would react differently.
in response to/respond to/react to the murder of six Israili soldiers
Re-act or react [ hyphen after re ? ]
React
React actively / inactively
react differently
react or interact
React or reaction vs respond or response
react to/on
reactionary = waiting for something to react upon?
respond or react
respond vs. react
respond/react
Should I react yippee?
the pilot has little time to react if interference were to disrupt navigational equipment
more...

Look up "react" at Merriam-Webster
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