mastermind

From master +‎ mind.

• (UK) IPA^(key): /ˈmɑː.stə.mʌɪnd/
• (US) IPA^(key): /ˈmæs.tɚˌmaɪnd/

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mastermind (plural masterminds)

1. A person with an extraordinary intellect or skill that is markedly superior to his or her peers.
   • 1840, Edgar Allan Poe, ‘The Colloquy of Monos and Una’:

     At long intervals some master-minds appeared, looking upon each advance in practical science as a retro-gradation in the true utility.

   • 2003, Steve Kemper, chapter 2, in Code Name Ginger: the Story Behind Segway and Dean Kamen's Quest to Invent a New World, →ISBN, page 34:

     His first outside hire wasn't an electronics whiz or a mechanical mastermind, but a young industrial designer, a creature hitherto unknown at DEKA.

2. A person responsible for the highest level of planning and execution of a major operation.
   • 2007, Mark S. Hamm, chapter 6, in Terrorism as Crime: from Oklahoma City to Al-Qaeda and Beyond, →ISBN, page 196:

     The first was with none other than Khalid Sheikh Mohammad (KSM), mastermind of the 9/11 attacks.

mastermind (third-person singular simple present masterminds, present participle masterminding, simple past and past participle masterminded)

1. To act in the role of mastermind.
   • 2007, Kevin Danaher et al., Building the Green Economy: Success Stories from the Grassroots, →ISBN, page 136:

     It would later be revealed that the corporation contributed over a quarter of a million dollars to the effort—a whopping 93 percent of the total coffer—and hired a team of media and political experts to mastermind it.

• mindstream