Did you know?

Click any word in a definition or example to find the entry for that word

react

 - definition
 
 
Close

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

Close

Thesaurus

The thesaurus of synonyms and related words is fully integrated into the dictionary entries. Click on the T button in an entry to review the synonyms and related words for that meaning.

more
verb [intransitive] react pronunciation in British English /riˈækt/ 
Word Forms
Close
present tense
I/you/we/theyreact
he/she/itreacts
present participlereacting
past tensereacted
past participlereacted

Related dictionary definitions

  1. 1
    to behave in a particular way because of something that is happening around you or something that someone is doing to you

    I wasn't sure how you would react.

    react to:

    The financial markets reacted badly to the latest news on inflation.

    Workers reacted angrily to the news of more job losses at the factory.

    react by doing something:

    When the parliament formally criticized him, Yeltsin reacted by threatening to close it down.

    react accordingly/appropriately:

    The software enables the computer to interpret messages and react accordingly.

  2. 2
    chemistry if a chemical substance reacts with another substance, it changes as they are mixed together
    react with:

    Car emissions react with sunlight to form ozone.

phrasal verbs

solutionism

the belief that every problem has a solution based in technology

BuzzWord Article

Open Dictionary

chicken raffle

any random process, such as a competition in which a name is drawn from a hat

add a word

Blog

A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog