[ pees-kee-per ]
/ ˈpisˌki pər /
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a person who maintains or restores peace and amity; mediator: Mother was the peacekeeper in our family.
a soldier, military force, etc., deployed to maintain or restore peace: American marines sent abroad as peacekeepers.
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Origin of peacekeeper

First recorded in 1570–80; peace + keeper
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use peacekeeper in a sentence

  • “No one knew what authority they had,” says Kathryn Bolkovac, the Nebraska-cop-turned-U.N.-peacekeeper who inspired the film.

    The Real-Life ‘Whistleblower’|Jessica Bennett|August 5, 2011|DAILY BEAST
  • Peacekeeper commanders allegedly resisted measures to curb such abuses.

    The U.N.'s Congo Disaster|Annie Rashidi-Mulumba|July 6, 2010|DAILY BEAST
  • His Excellency's Peacekeeper turned to stay facing the dog but found himself turning his back on Peter.

    History Repeats|George Oliver Smith
  • I want our money-grubbing Peacekeeper to carry a message to His Excellency.

    History Repeats|George Oliver Smith