/ˈɪnstɪɡeɪtə/ – Noun
Definition: người xúi giục, người kích động, người khởi xướng.
A more thorough explanation: An instigator is a person who actively encourages, incites, or provokes others to engage in a particular action or behavior, especially one that is unlawful or disruptive.
Example: The prosecutor argued that the defendant was the instigator of the criminal conspiracy.