1. 激励者：instigation therapy 鼓舞治疗法 | instigator 激励者 | instinct 本能

2. 教唆犯：instigation 教唆 | instigator 教唆犯 | instil 逐渐灌输

3. 发起者,煽动者：270. insider: 局内人,圈内人. | 271. instigator: 发起者,煽动者. | 272. instrumentalist: 乐器演奏者.

1. 发起者;鼓动者;唆使者;怂恿者
The instigator of an event is the person who causes it to happen.

e.g. He was accused of being the main instigator of the coup.
他被指控为这场政变的主谋。
e.g. ...the key instigators of reform.
改革的主要发起者

noun

1. a person who initiates a course of action

Synonym: initiator

2. someone who deliberately foments trouble

e.g. she was the instigator of their quarrel

Synonym: provokerinciterinstigantfirebrand