mastermind

1 of 2

noun

mas·​ter·​mind ˈma-stər-ˌmīnd How to pronounce mastermind (audio)
ˌmas-tər-ˈ
Synonyms of mastermindnext
: a person who supplies the directing or creative intelligence for a project

mastermind

2 of 2

verb

masterminded; masterminding; masterminds

transitive verb

: to be the mastermind of

Examples of mastermind in a Sentence

Noun the mastermind behind the terrorist plot the real mastermind behind the embezzlement scheme Verb They masterminded a unique solution to the problem. He masterminded the bank robbery.
Recent Examples on the Web
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Noun
The mastermind behind it all is chef Keiko Kuwakino, who has previously won the Niigata Gastronomy Award’s Best Female Chef honor. Condé Nast, Condé Nast Traveler, 29 May 2026 Moriarty is a Professor of Criminal Psychology at Durham University but leads a secret double life as the mastermind behind every crime of sophistication in the North of England. Max Goldbart, Deadline, 28 May 2026
Verb
The manager who masterminded the FA Cup win last season and the player who scored the winning goal in the UEFA Conference League final took a moment to appreciate each other and let reality sink in. Matt Woosnam, New York Times, 28 May 2026 He had been tried in absentia and convicted in dozens of murders, including helping to mastermind a pair of 1992 bombings that killed top anti-Mafia prosecutors Giovanni Falcone and Paolo Borsellino. ABC News, 28 May 2026 See All Example Sentences for mastermind

Word History

First Known Use

Noun

1872, in the meaning defined above

Verb

1927, in the meaning defined above

Time Traveler
The first known use of mastermind was in 1872

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Cite this Entry

“Mastermind.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mastermind. Accessed 6 Jun. 2026.

Kids Definition

mastermind

noun
mas·​ter·​mind
ˈmas-tər-ˌmīnd
ˌmas-tər-ˈmīnd
: a person who invents or directs a project
mastermind verb

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