mastermind

[ mas-ter-mahynd, mah-ster- ]
/ ˈmæs tərˌmaɪnd, ˈmɑ stər- /

verb (used with object)

to plan and direct (a usually complex project or activity), especially skillfully: Two colonels had masterminded the revolt.

noun

a person who originates or is primarily responsible for the execution of a particular idea, project, or the like: the masterminds of company policy.

Origin of mastermind

First recorded in 1710–20; master + mind
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mastermind

British Dictionary definitions for mastermind

mastermind
/ (ˈmɑːstəˌmaɪnd) /

verb

(tr) to plan and direct (a complex undertaking)he masterminded the robbery

noun

a person of great intelligence or executive talent, esp one who directs an undertaking
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012