frat

noun

ˈfrat 

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

The frat brother who invited Jane Doe to the house that night sent a photo to the chat that appears to show her in the bedroom. — Aaron Katersky, ABC News, 2 Oct. 2026

Bush, 44, recalls some of their first shows taking place in college town bars and frat houses, often for paychecks of just a few hundred dollars. — Jack Irvin, PEOPLE, 24 Sep. 2026

The street-style icon gave a pair of frat boy flats a bonafide Fashion Girl upgrade while out in New York this past week, reviving the boat shoe trend for fall 2026. — Kaitlin Clapinski, InStyle, 17 Sep. 2026

As did some of the reporters on hand, who presumably confused a press room for an out-of-control frat house. — Candace Buckner, New York Times, 16 Sep. 2026

Word History

First Known Use

circa 1895, in the meaning defined above

Phrases Containing frat

• frat party