What is the author's style in Water for Elephants by Sara Gruen?

The language of the novel is clear, precise English. The passages are clear and easy to read. The only slang included in the novel are words used at the circus that refer to the customers or the performers with titles not used in common speech, but is common for the circus workers who employ it. This easy flow between common speech and the speech of the circus workers makes the slang appear to be normal language and is not difficult for the reader to understand in the context in which a word is used.