An author is the creator or originator of any written work such as a book or play, and is also considered a writer. More broadly defined, an author is “the person who originated or gave existence to anything” and whose authorship determines responsibility for what was created..He is the author of two books on French history. In his preface, the author says that he took eight years to write the book. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors..In the sense be the author of the verb author is objected to by some traditionalists. It is well established, though, especially in North America, and has been in .