How to make sure the language in your historical fantasy novel is period-accurate

We love seeing the grand technological anachronisms in science fiction novels set in the past, such as Victorian or Edwardian-era steampunk or exaggerated Renaissance automata. But what if you want to keep the language in your historical novel accurate for the period? Here's a simple trick historical fantasy novelist… » 1/19/13 7:30am 1/19/13 7:30am