- to act in response to an agent or influence: How did the audience react to the speech?
- to act reciprocally upon each other, as two things.
- to act in a reverse direction or manner, especially so as to return to a prior condition.
- to act in opposition, as against some force.
- to respond to a stimulus in a particular manner: reacting to a shock by jumping; to react to the word “coward” with anger.
- to undergo a chemical reaction.
Origin of react
- to act or perform again.
Origin of re-act
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for react
People watch night soaps because the genre allows them to believe in a world where people just react off their baser instincts.‘Empire’ Review: Hip-Hop Musical Chairs with an Insane Soap Opera Twist
January 8, 2015
I know, some of you will now react by saying that the Netanyahu government supports a Palestinian state.In the Middle East, the Two-State Solution Is Dead
January 2, 2015
Instead of reacting to Republican proposals, President Obama is forcing Republicans to react to him.The Liberation of the Lame Duck: Obama Goes Full Bulworth
December 19, 2014
These insights and discoveries help PepsiCo anticipate, rather than react to, an ever-changing consumer landscape.The Science of Ingredient Innovation
December 15, 2014
The country has the ability to react very quickly because of the experience of the physicians and the political will to do so.The Dark Side of Cuba’s Ebola Economy
December 9, 2014
Previously, this dog did not react when it saw people stoop down.
There is thus no domain of the mind which is not influenced by love, and which does not react on love in its turn.
At any rate he will then be less often deceived and will react in a more plastic manner.
But the children are well aware of this fact, consciously or not, and react accordingly.
"That's why you react so strongly from love in your plays," Roger said judicially.Changing Winds
St. John G. Ervine
- (intr ; foll 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
- (intr foll by against) to act in an opposing or contrary manner
- (intr) physics to exert an equal force in the opposite direction to an acting force
- chem to undergo or cause to undergo a chemical reaction
C17: from Late Latin reagere, from re- + Latin agere to drive, do
- (tr) to act or perform again
Word Origin and History for react
Online Etymology Dictionary, © 2010 Douglas Harper
- To act in response to a stimulus.
- To undergo a chemical reaction.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.