Definitions
plan and direct (a complex undertaking)
Word origin
From master + mind.
Used in a sentence
“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.”
“The first was with none other than Khalid Sheikh Mohammad (KSM), mastermind of the 9/11 attacks.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Plan in detail”10 letters
02“Plans secretly”10 letters
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