US, informal
: fraternity sense 1c
Today's progressive notions of responsible partying and political correctness have hit hard at all eighteen of Dartmouth's frats but especially so at Alpha Delta, which has always had the reputation of being the baddest house on campus.Eric Konigsberg
often used before another noun
frat houses/brothers
(often disparaging) a frat boy [=a member of a fraternity]

Examples of frat in a Sentence

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.
Like Mark Pascal, who was in the same frat at Rutgers and joined the league in 1994. Hannah Keyser, CNN Money, 3 Sep. 2026 However, Jaiden’s description of his behavior post-villa is more in line with a frat boy who’s just won People’s Sexiest Man Alive. Kathleen Walsh, Vulture, 1 Sep. 2026 The committee would eventually disband without an answer, despite the fact that Selig had helped engineer the sale of the team in 2005 to Lew Wolff, an old University of Wisconsin frat buddy, and John Fisher. Barry M. Bloom, Forbes.com, 30 Aug. 2026 Franco became a household name through playing jocks and frat boys in beloved comedy films like Superbad, 21 Jump Street, and Neighbors. Emlyn Travis, Entertainment Weekly, 27 Aug. 2026 See All Example Sentences for frat

Word History

First Known Use

circa 1895, in the meaning defined above

Time Traveler
The first known use of frat was circa 1895

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Cite this Entry

“Frat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/frat. Accessed 6 Sep. 2026.

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