mastermind

1 of 2

noun

mas·​ter·​mind ˈma-stər-ˌmīnd 

ˌmas-tər-ˈ

: a person who supplies the directing or creative intelligence for a project

mastermind

2 of 2

verb

masterminded; masterminding; masterminds

transitive verb

: to be the mastermind of

Synonyms of mastermind

Noun

• architect
• engineer

Verb

• engineer
• negotiate
• plot
• manipulate
• arrange
• maneuver

Examples of mastermind in a Sentence

Noun

the mastermind behind the terrorist plot

the real mastermind behind the embezzlement scheme

Verb

They masterminded a unique solution to the problem.

He masterminded the bank robbery.

Recent Examples on the Web

Noun

Scott Keever is an entrepreneur, internationally recognized SEO expert, online reputation mastermind and Founder of Reputation Pros. — Scott Keever, Forbes.com, 15 Sep. 2026

One such comedic element comes into play during the heist itself, as two bank employees (David Arquette and Christine Taylor) struggle to make sense of the masterminds’ overcomplicated pre-written instructions. — Glenn Garner, Deadline, 14 Sep. 2026

Verb

Morris Katz, a young Democratic strategist who helped mastermind the candidacy of Zohran Mamdani (and Graham Platner), met Jentleson during Fetterman’s 2022 Senate campaign. — Jason Zengerle, New Yorker, 10 Sep. 2026

For decades, the prevailing story of the Manson murders held that Charles Manson masterminded a murderous plot to ignite a race war inspired by the Beatles. — Stephanie Nolasco, FOXNews.com, 5 Sep. 2026

Word History

First Known Use

Noun

1872, in the meaning defined above

Verb

1927, in the meaning defined above

Rhymes for mastermind

• countersigned
• disinclined
• humankind
• interlined
• intertwined
• misaligned
• nonaligned
• predefined
• realigned
• reassigned
• recombined
• redefined

Kids Definition

mastermind

noun

mas·​ter·​mind

ˈmas-tər-ˌmīnd, 

ˌmas-tər-ˈmīnd

: a person who invents or directs a project

mastermind verb