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Definitions

mastermind

[mas-ter-mahynd, mah-ster-] / ˈmæs tərˌmaɪnd, ˈmɑ stər- /
VERB
plan and direct
Synonyms
STRONGEST
STRONG
WEAK


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The Cryptolocker mastermind was eventually identified as Evgeniy Bogachev, a Russian national known to be fond of luxury cars and yachting on the Black Sea.

From The Wall Street Journal • May 6, 2026

Halperin’s accusers were gobsmacked to see Kelly, who’d once given them a sympathetic platform on the Today show, turn around and mastermind his comeback.

From Slate • May 6, 2026

“Hannah was the mastermind who figured out four nesting possibilities.”

From Los Angeles Times • Apr. 8, 2026

Cook was the mastermind of the strategy that made China the primary manufacturing base for Apple devices, with the vast majority of iPhones assembled by contractor Foxconn and other suppliers in Chinese factories.

From Barron's • Mar. 29, 2026

In May of that year, Osama bin Laden, the mastermind behind the 9/11 attacks, was killed in his hiding place in Abbottabad, just a stone’s throw away from our military academy.

From "Malala: The Girl Who Stood Up for Education and Changed the World" by Malala Yousafzai