An answer is a response to a question, problem, or need. If you don’t get enough sleep, quitting your late-night TV habit might be the answer.
Answer, which can be a noun or a verb, comes from the Old English for swear, and the word originally meant an official, sworn response to a legal charge. We don’t have to be sworn in when we answer a question, however, we just need to reply. Answer also means "solution." Is the answer to poverty better education? If you meet a requirement, you answer it. If you are obligated to someone, you answer to him.