Take responsibility for, take charge of, as in The new alarm system has to answer for the security of the grounds. [Late 1200s]
Take the blame for, as in The kids who were caught shoplifting have a lot to answer for. [c. 1200]
To vouch for or sponsor someone, as in I'll answer for John as a reliable employee. [Early 1700s]
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.