Slang and other forms of informal language are almost always older than you think. Bruh is recorded in the 1890s as a title before a man’s name, e.g., Bruh John . Bruh is ultimately shortened from and based on regional pronunciations of brother . It takes off a term for a male friend or a guy more generally in the 1960s. Bruh originates in and was popularized by Black English.

Bruh joins many other forms that come from brother , including bro , brah , bredder , brer , and buh —all of which have also been around far longer than you may guess, recorded as titles or forms of address in Black English throughout the 1800s. And brother itself has been recorded as a way to address a man who isn’t one’s male sibling all the way back in Old English!

Since bruh is related to and overlaps with the slang bro , it’s worth shedding some light on the development of the latter. Bro specifically spreads as a way for Black men to address one another in the early 1900s. Like bruh , it goes mainstream as an informal term for a “male friend or fellow” in the 1960s. It was not until the 1990s, though, that the stereotypical bro takes off to refer to—and often mock—a young, usually white male variously and often negatively characterized as being preppy, party-loving, egotistical, sexist, and so on.

Bruh is recorded online since at least the 1990s. Spreading in the 2010s, bruh has been used as an interjection used to react to something a fellow guy finds amazing, surprising, or exciting as well as its opposite—something exasperating , embarrassing, or questionable in some way. For instance: You got the new job? Bruh! or You left the milk sitting out overnight? Bruh. Similar bruh words like dude and man are used in the same way. This bruh notably has been used in memes, GIFs, images, videos, comments, and other content on social media and forums during the 2010s and on.