This became one of the most frequently looked up words on our site following Sarah Palin's embrace of it first during her candidacy and later in the title of her book, Going Rogue.
Rogue, meaning "one who can't be controlled," comes from rogue elephant one that "roams alone."
"She's lost confidence in most of the people on [her] plane," said a senior Republican.... He said Palin had begun to "go rogue" in some of her public pronouncements and decisions.
Time.com, October 2008