My high school English teacher always said, “If you don’t know a word, look it up.” A few quick ways to look up a word (say “virago”) in your web browser:

• Firefox users: type dict virago in the address bar where web site addresses usually go. You’ll be magically transported to dictionary.com’s definition of the word.
• From a Google search box: type define:virago and you’ll get definitions from various sources on the web.