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Definitions

instigator

[in-sti-gey-ter] / ˈɪn stɪˌgeɪ tər /


Frequently Asked Questions

What is another word for instigator?
Instigator is most commonly used in a negative way to refer to a person who provokes other people or incites trouble—often by instigating arguments or encouraging dangerous actions. Synonyms include agitator, antagonizer, provocateur, troublemaker, incendiary, and firebrand. Some instigators make elaborate plans to stir up trouble, but others are opportunists who find any opportunity to throw a match on a powder keg. The term agent provocateur is more specific than provocateur. An agent provocateur is a secret agent working to incite people into illegal actions so that they can be arrested.
What is the opposite (antonym) of instigator?
The opposite of instigating is trying to stop trouble, rather than starting it. In the context of an argument or conflict, such a person might be called a peacemaker or peacekeeper. The word troubleshooter can also be used in this way. Mediators try to help parties in a conflict to resolve it.
Is instigator a negative word?
Instigator is almost always used in a negative way in the context of someone starting trouble. It’s possible to be used positively in a way that’s ironic, as in instigator of peace. In neutral contexts involving things causing other things, the neutral word catalyst is a good choice.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

According to their coach, Romain Haguenauer, this change of music was the result of behind-the-scenes manipulation -- the instigator allegedly an American judge, a compatriot of Chock and Bates.

From Barron's Feb. 10, 2026

He is desperate not to be the instigator, or author, of another blast of extraordinary turbulence in British politics.

From BBC Feb. 9, 2026

"It potentially acts as an instigator of early Alzheimer's pathology."

From Science Daily Dec. 22, 2025

But whether it is an unexpected jump in claims costs or lower premiums that are the instigator, the upshot is that auto-insurance underwriting might now be past its peak profitability.

From The Wall Street Journal Nov. 8, 2025

He was a fast picker in the rows and a joyful instigator outside of them; he brought both kinds of dexterity to this night.

From "The Underground Railroad: A Novel" by Colson Whitehead

Loyalist commanders estimate there were half-a-dozen coup instigators and perhaps 40 eager co-conspirators.

From The Wall Street Journal Mar. 12, 2026

Intervention by the governor and community mediation efforts restored a fragile peace to the area, but the instigators of the violence remain at large.

From Barron's Feb. 26, 2026

In the meeting, he promised the "entire state apparatus" was "fully mobilised to track down the perpetrators and instigators of this violence and put them out of action", according to French media reports.

From BBC May 27, 2025

School officials also have “spoken to Los Angeles County Dist. Atty. George Gascón,” he said, “to solicit his help in ensuring that the instigators will be prosecuted to the fullest extent of the law.”

From Los Angeles Times May 6, 2024

In 2012, several further studies corroborated these initial findings, strengthening the links between these variants of mental illness and family histories and deepening questions about their etiology, epidemiology, triggers, and instigators.

From "The Gene" by Siddhartha Mukherjee




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