mastermind

1 of 2

noun

mas·​ter·​mind ˈma-stər-ˌmīnd How to pronounce mastermind (audio)
ˌmas-tər-ˈ
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Once enlisted, recruits rarely meet the masterminds behind the crimes, instead receiving instructions through handlers online. Emma Bussey, FOXNews.com, 30 Sep. 2025 Mommy Pai’s, the latest venture from the masterminds behind Thai Diner and the late Uncle Boons, seems to follow this road map—on paper, at least. Helen Rosner, New Yorker, 28 Sep. 2025
Verb
In 1988, the right-wing Cuban terrorist Orlando Bosch arrived in Miami, after serving time in prison for masterminding a series of gruesome bombings. Jon Lee Anderson, New Yorker, 29 Sep. 2025 That trip, meticulously masterminded by head coach Andy Flower and captain Andrew Strauss, also saw their last Test match win on Australian soil. James Wallace, New York Times, 22 Sep. 2025 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

Browse Nearby Words

Cite this Entry

“Mastermind.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mastermind. Accessed 8 Oct. 2025.

Kids Definition

mastermind

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

More from Merriam-Webster on mastermind

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!