Definition of "svengali" []

• One who manipulates or controls another as by some mesmeric or sinister influence; especially a coach, mentor or industry mogul. (noun)

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• "Such was her perceived hold over the Blairs that she was frequently described as a "svengali or Rasputin" character."
• "He's been called their svengali, but his contributions tonight feel entirely convivial."
• "Late Late Update: I used the word "svengali" to describe Power when I meant "guru.""