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Synonyms

peacekeeper

American  
[pees-kee-per] / ˈpisˌki pər /

noun

  1. a person who maintains or restores peace and amity; mediator.

    Mother was the peacekeeper in our family.

  2. a soldier, military force, etc., deployed to maintain or restore peace.

    American marines sent abroad as peacekeepers.


Etymology

Origin of peacekeeper

First recorded in 1570–80; peace + keeper

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.

A UN security source told AFP that Israeli fire had killed an Indonesian peacekeeper at the weekend, after the UN force said it was investigating the incident.

From Barron's • Mar. 31, 2026

Injury ended his gridiron dreams and led him onto the more genteel fields of baseball, where he became a peacekeeper rather than a mayhem maker.

From The Wall Street Journal • Feb. 26, 2026

The idea that one is always sort of the victim, the perpetrator, the peacekeeper.

From Los Angeles Times • Mar. 31, 2025

Deterrence can be an effective peacekeeper, but it’s unclear how effective, for how long, when it’s not bolstered by diplomatic and institutional guardrails.

From Slate • Aug. 28, 2024

Still, the peacekeeper in me doesn’t want to see them fight.

From "The Sun Is Also a Star" by Nicola Yoon