mastermind

/M AE1 S T ER0 M AY0 N D/
noun
  1. 1

    A person with an extraordinary intellect or skill that is markedly superior to his or her peers.

  2. 2

    A person responsible for the highest level of planning and execution of a major operation.

verb
  1. 1

    To act in the role of mastermind.

Source: https://en.wiktionary.org/wiki/mastermind