Definition of "provoker" [provoker]

• A person who provokes; a troublemaker (noun)

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• "Dan Cole and Tom Palmer have clearly accepted the invitation – the demand – to make an impact, Dylan Hartley to prove a provoker wrong."
• "Recently, for example, I have become convinced of the usefulness of poetry recitation as a provoker of fluency (another time, OK?), and that certainly includes some speaking-all-together."
• "I have, however, just finished The Doomsday Book, which is as much a thought-provoker as anything one of those books Harold Bloom likes purports to be."