: one who incites or stimulates another to action
The show's host is a notable provocateur who has made a career of creating controversy for its own sake.
"The 66-year-old director has always fared best as a provocateur. His 1991 film, JFK, might not be great history, but it did prompt the release of thousands of pages of previously classified documents. [Oliver] Stone is a relentless stirrer who is never happier than when tipping buckets on the received wisdom." — From an article by Tim Elliott in the Sydney Morning Herald, December 15, 2012