react

Universal Words verb [V] 1 ~ (to sth) (by doing sth) to change or behave in a particular way as a result of or in response to sth: Local residents have reacted angrily to the news. * I nudged her but she didn't react. * You never know how he is going to react. * The market reacted by falling a further two points. 2 to become ill/sick after eating, breathing, etc. a particular substance: People can react badly to certain food additives. 3 ~ (with sth)