posse

noun

pos·​se ˈpä-sē How to pronounce posse (audio)
Synonyms of possenext
1
: a large group often with a common interest
2
: a body of persons summoned by a sheriff to assist in preserving the public peace usually in an emergency
3
: a group of people temporarily organized to make a search (as for a lost child)
4

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Posse started out in English as part of a term from common law, posse comitatus, which in Medieval Latin translates as “power or authority of the county.” Posse comitatus referred to a group of citizens summoned by a reeve (a medieval official) or sheriff to preserve the public peace as allowed for by law. “Preserving the public peace” so often meant hunting down a supposed criminal that posse eventually came to refer to any group organized to make a search or embark on a mission, and today one may read about posses organized for search and rescue efforts. In even broader use it can refer to any group, period. Sometimes nowadays that group is a gang or a rock band but it can as easily be any group—of politicians, models, architects, tourists, children, or what have you—acting together for some shared purpose.

Examples of posse in a Sentence

The sheriff and his posse rode out to look for the bandits. I went to the game with my posse.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Also part of Jenner's posse are sisters Gigi and Bella Hadid, who have also rocked the runway, partied and traveled with the Keeping Up with the Kardashians star. Stephanie Sengwe, PEOPLE, 14 May 2026 At the time of the founding, the last of these involved both law enforcement (an Old West sheriff’s posse is a parallel) and military functions (such as the Revolution’s Minutemen). Michael Szalma, The Orlando Sentinel, 9 May 2026 The plane lands, surrounded by throngs of people, and out steps Hitler, followed by his posse, including Joseph Goebbels. Literary Hub, 27 Apr. 2026 There are 50 pieces of James and his posse. John Lauritsen, CBS News, 16 Apr. 2026 See All Example Sentences for posse

Word History

Etymology

Medieval Latin posse comitatus, literally, power or authority of the county

First Known Use

1646, in the meaning defined at sense 2

Time Traveler
The first known use of posse was in 1646

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Cite this Entry

“Posse.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/posse. Accessed 17 May. 2026.

Kids Definition

posse

noun
pos·​se ˈpäs-ē How to pronounce posse (audio)
1
: a group of people called upon by a sheriff for help (as in pursuit of a criminal)
2
: a number of people organized to make a search (as for a lost child)
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