The most popular online dictionary and thesaurus for learners of English
react
/riˈækt/ verb [I]Definition
SAY/DO › to say, do, or feel something because of something else that has been said or done: He reacted angrily to her comments.
BAD EFFECT › to become ill because something that you have eaten or used on your body has had a bad effect on you: My skin reacts to most perfumes.
SUBSTANCES › In science, if a substance reacts with another substance, it changes: Carbon reacts with oxygen to produce carbon dioxide.
(Definition of react verb from the Cambridge Learner's Dictionary
© Cambridge University Press)
Browse the Dictionary
Browse the Thesaurus
More Results for “react”
Word of the Day
Blog
Read our blog about how the English language behaves.
New Words
Find words and meanings that have just started to be used in English, and let us know what you think of them.
