IPA: /ˈmæstərˌmaɪnd/
KK: /ˈmæstərˌmaɪnd/
A person who is very intelligent and is responsible for planning and organizing a complex project or activity.
The mastermind behind the successful campaign was praised for his innovative ideas.
To plan and organize a complex project or activity, often with great skill and intelligence.
She was able to mastermind the entire event, ensuring everything went smoothly.
Past: masterminded
Past Participle: masterminded
Mastermind → It is formed from "master" (from Old English "maegester", meaning one who has control or authority) and "mind" (from Old English "gemynd", meaning memory or thought). The word "mastermind" refers to a person who is highly intelligent and capable of planning and directing complex activities or schemes.
Think of someone who has 'control' ('master') over their 'thoughts' ('mind') — that's why a mastermind is someone who skillfully plans and directs.