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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.

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

They portray him as the mastermind of a scheme of illicit enrichment.

From Barron's • Apr. 7, 2026

Authorities say several suspects, including the alleged mastermind, remain under active investigation, with further arrests expected.

From BBC • Feb. 19, 2026

In the trial of Vincenzo Perugia, there was no mastermind.

From "The Mona Lisa Vanishes" by Nicholas Day