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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 mastermind behind ASML’s unlikeliest hit product is a data analyst named Rick Lenssen—or, as he’s now known to some colleagues, Brick Lenssen.

From The Wall Street Journal • Apr. 20, 2026

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

From Los Angeles Times • Apr. 8, 2026

The Los Angeles Lakers honored legendary coach Pat Riley, mastermind of the team's 1980s "Showtime" era, with a statue outside Crypto.com Arena on Sunday.

From Barron's • Feb. 23, 2026

Sports scientist Nomali is the mastermind - and the character through which the game is played, helped by colleagues from across the continent.

From BBC • Feb. 9, 2026

No self-respecting criminal mastermind would be caught dead even using the word lollipops.

From "Artemis Fowl" by Eoin Colfer