mastermind

1. V-T If you mastermind a difficult or complicated activity, you plan it in detail and then make sure that it happens successfully. 策劃

There are many theories as to who masterminded the attacks. 關於誰策劃了這些攻擊，有許多的猜測。

2. N-COUNT The mastermind behind a difficult or complicated plan, often a criminal one, is the person who is responsible for planning and organizing it. 幕後操縱者

He was the mastermind behind the plan to acquire the explosives. 他是獲取炸葯計劃的幕後操縱者。