As a Noun: 1. What you say or write back to someone who has asked you a question. English = answer. 2. What you say or write to someone as a result of what they have said or written to you. English = answer, reply, response. 3. A possible solution to a problem. English = answer. As a Verb or Adjective: 1. To say something back to someone who has asked you a question. English = answer. 2. To say something back to someone as a result of what they have said or done or as a result of a question. English = reply, respond. 3. To write a letter back to someone as a result of having already received one from them. English = answer, reply. As Modifier: 1. Used at the beginning of a sentence to make clear that what follows is what you want to say back to someone who has said something or who has asked you something. English = in response, to answer your question, in reply, and so on.