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English definition of “respond”

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respond

verb [I] uk   /rɪˈspɒnd/ us    /-ˈspɑːnd/
B2 to say or do something as a reaction to something that has been said or done: [+ speech] To every question, he responded "I don't know." I asked her what the time was, but she didn't respond. He responded by marching off and slamming the door behind him. How did she respond to the news? [+ that] When the tax office wrote to me demanding unpaid income tax, I responded that I had been working abroad since 1998. The police respond to emergencies (= arrive and are ready to deal with emergencies) in just a few minutes.respond to sth If diseases or patients respond to treatment, the treatment begins to cure them: It remains to be seen whether the cancer will respond to treatment. For patients who do not respond to drug treatment, surgery is a possible option.
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(Definition of respond from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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