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mastermind

nounverbattested in dialogue

  • United Kingdom//ˈmɑː.stə.mʌɪnd//
  • United States//ˈmæs.tɚˌmaɪnd//

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

noun

  1. 1

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

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

    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. 2

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

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

    Prosecutors later suspected that Wang, chairman of Ciji Temple in Tainan's Syuejia District, was the mastermind behind the shootings, but the court acquitted him of the charge because of insufficient evidence.

Etymology

From master + mind.

verb

  1. 1

    To plan or execute (a project) in the role of mastermind.

    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.

    Travelling over the route today, it is well to remember the ongoing role of the Friends of the S&C and the work of the late Ron Cotton. He masterminded its revival, thereby reversing the role he had been given by BR to bring about its closure.

    Gray was soon replaced by Morgan McSweeney, who had masterminded Labour’s unexpectedly rapid post-Jeremy Corbyn renaissance, but was equally unsuited to the role, and whose primary legacy was the disastrous appointment of Peter Mandelson as ambassador to Washington.

Forms

plural
masterminds
past tense
masterminded
past participle
masterminded
present participle
masterminding
third person singular
masterminds
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).