What is the author's style in Mansfield Park by Jane Austen?

Coming at the end of the Age of Reason and not quite yet to the Romantic Age, the language in this novel can be considered stiff. Most of the words have Latin, not Germanic, roots, which to our modern ears sounds esoteric. Some words that we rarely use today are used repeatedly, and the meanings may be somewhat different. For example, "intercourse" means "conversation." Instead of getting upset, people are "vexed."