react
verb [ I ]
uk/riˈækt/ usif prices or markets react, their levels rise or fall as a direct result of something that happens:
react to sth How did bank share prices react to last year's financial results?
react badly/favourably/positively The market reacted positively to last week's news of the £53.7m bid.
react with sth The shares reacted with a 22p fall to 684p.
to behave in a particular way as a direct result of something else:
react calmly/cautiously
react quickly/strongly
react to sth The union reacted angrily to the threat of job losses.
react by doing sth China has reacted to reports of unsafe products by cracking down on its own manufacturers.