B1noun1K

Reaction

UK /["/riˈækʃn/"]/US /["/riˈækʃn/"]/

Definition

what you do, say or think as a result of something that has happened

In simple words: How someone responds to something.

Examples

  • Her reaction to the news was surprisingly calm.
  • He had a quick reaction when the ball was thrown at him.
  • The medication caused an allergic reaction in some patients.
  • He always delivers a strong reaction to criticism.
  • Their reaction to the surprise party was priceless.
  • The coach praised the team's reaction during the game.
  • I was curious to see her reaction to the proposal.

Usage notes

Used in both formal and informal contexts, but avoid in highly casual conversations. Common in discussions about emotions or scientific processes.

Grammar pattern

reaction + to + object

Memory hint

Think of 'react' — you react when something happens!

Collocations

  • extreme
  • strong
  • violent
  • get
  • have
  • meet with
  • in reaction to
  • reaction against
  • reaction to
  • extreme
  • strong
  • violent
  • get
  • have
  • meet with
  • in reaction to
  • reaction against
  • reaction to
  • adverse
  • bad
  • severe
  • experience
  • have
  • suffer
  • reaction to
  • fast
  • good
  • lightning
  • have
  • speed up
  • slow down
  • time
  • chain
  • chemical
  • nuclear
  • cause
  • initiate
  • produce
  • occur
  • take place
  • during a/​the reaction
  • in a/​the reaction
  • reaction between

Synonyms

  • response
  • reply
  • feedback
  • counter
  • retort

Antonyms

  • inaction
  • apathy
  • indifference

Common mistakes

  • Confused with 'action' as they are opposites.
  • Using 'reaction' without specifying what it is a reaction to.
  • Mispronouncing it as 'rea-kshun' instead of 'ree-akshun'.