response

noun
UK /rɪˈspɒns/
US /rɪˈspɑːns/

Something you say or do back when someone talks to you or asks you something.

She gave a quick response to my question.


OTHER MEANINGS

2. A reaction to something that happens, like a feeling or action.

His response to the surprise was a big smile.

3. Words said or sung by a group of people in a church service.

The congregation sang the response together.

4. The way a body or machine reacts to something.

The doctor checked the patient's response to the medicine.