mastermind . mastermind {v.} To create; direct; invent the central plan for several individuals to follow. Lenin masterminded the Bolshevik Revolution in Russia. Categories: add yours {v.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 To section: M Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Post my comment